备战2021高考英语语法填空技能精选精练(六) 
并列连词和三大从句
小题夯基练
备战高考单句语法填空
1.[2020·新高考山东卷] They kept their collection at home until it got too big ________ until they died, and then it was given to a museum.
2.[2020·全国卷改编]Actually, I started to learn kung fu when I was seven years old, ________ I have long been out of practice.
3.[2019·全国卷]I work not because I have to, ________ because I want to.
4.[2020·天津卷7月]Dr. Rowan, ________ secretary resigned two weeks ago, has had to do all his own typing.
5.[2019·北京卷]The students benefitting most from college are those ________ are totally engaged (参与) in academic life, taking full advantage of the college's chances and resources (资源).
6.[2020·天津卷5月]Mr. Smith owned this oil painting until the early 1990s, ________ he gave it to his grandson.
7.[2020·全国卷]Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot ________ it could send signals to the spacecraft and to Earth.
8.[2020·北京卷] Some university students carried out a campaign ________ they spent their whole day without cell phone.
9.[2019·全国卷]The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland. While they are rare north of 88°, there is evidence ________ they range all the way across the Arctic, and as far south as James Bay in Canada.
10.[2020·浙江卷7月]Over thousands of years, they began to depend less on ________ could be hunted or gathered from the wild, and more on animals they had raised and crops they had sown.
11.[2020·天津卷]The student completed this experiment to make come true ________ Professor Joseph had said.
12.[2020·河北衡水中学一调]The song A little bit longer by Nick Jonas is________ an emotional and inspiring song that whenever I hear it, I always come close to dropping down tears.
13.[2020·山东省济南市高三5月模拟]The doctor was certain I would test positive for coronavirus, but gave me the option to test ________ I wanted to know for sure. I opted to be tested.
14.[2020·河南省高三5月质量检测]And ________ we do now is to deal with the plastic that causes great damage to our sea life.
15.[2020·太原二模]I had hardly sat down on the train and opened a bar of chocolate ________a really old man with huge bags sat down across from me.
16.[2020·安徽省高三联考]They serve as an important driving force for local economic and social development, while acting as a bridge between Quanzhou ________ the wider world.
大题提能练
Test 1
[2020·沈阳市教学质量监测(一)] Eating and drinking in subway cars has long been a controversial issue in China. While many have expressed annoyance 1.________ the  sight of someone eating food in subway cars,  quite a few people support the right to chew 2.________        (noisy)  on snacks during the trip to work or school.
      The debate recently arrived at 3.________ (it) final destination when the Ministry of Transport introduced a new regulation last week that bans passengers nationwide, with the
exception of 4.________ (baby) and people with certain medical conditions, from eating or drinking in subway cars.
    The policy 5.________ (schedule) to take effect on April 1 along with some new rules that will forbid passengers from playing music or videos on speakers, or 6.________ (lie) down on seats in subway cars.
    Zhang Han, 7.________ 18­year­old girl, recalled that a female passenger was seen recently on the subway in Nanjing 8.________  (fine) for eating traditional street food.
    At first, I felt sorry for the girl, she said.  Most people were simply 9.________        (aware) of such a food ban before.
    Now that a national ban is in the pipeline (在准备中),  she said she supported the idea.  The subway car is a public space.  No food should be allowed, 10.________or not it gives off a strong smell.
Test 2
[2020·武昌区高三调研考试] The victims were carried in one by one, their paws burned and fur singed (烤焦),  suffering from  dehydration (脱水)  and fear. Their caretakers bandaged their wounds and laid them in baskets with the only thing that they were familiar with—the 1.________    (leaf)  of the eucalyptus(桉树).
      As catastrophic fires have swept across more than two million acres in Australia, dozens of koalas 2.________  (rescue) from smoking trees and ashen ground.
    The difficulty of the koala has raised questions among conservationists and scientists about what it will take 3.________ (preserve) biodiversity in a country 4.________ (increasing) tending to have intense fires, extreme heat and water scarcity. And it already has the highest rate of species 5.________ (extinct) in the world.