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求英语答案最好写下原因哦

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求英语答案最好写下原因哦
1.I would like to know how long____Chinese before you came to China.
A.have you studied B.you have studied
C.had you studied D.you had studied
2.It's going to rain.It____go out and watch TV at home.
A.is better not to B.had better not
C.isn't better to D.had betternot to
21.How____a swim in the river after a day of hard work in summer!
A.nine is it to have B.nice it is to have
C.it is nice to have D.nice to have it is
22.I can still remember____to Nanjing when I was only a_____boy.
A.taking,five years old B.to take,five years'
C.being taken,five-year-old D.taken,five-years-old
23.The speed____light travels is about 300,000 kilometers per second.
A.which B.at which C.that D.with that
24.He knew she was wrong,but he____tell her.
A.doesn't dare B.doesn't dare to C.dare not to D.dared not
25.Some people are against the plan,but_____support it.
A.many more B.much more C.any more D.no more
26._____you have got a chance you might as well make full use of it.
A.After B.As soon as C.Now that D.Although
27.I earn 5 dollars____hour as_____supermarket cashier on Sundays.
A.a,an B.the,a C.an,a D.an,the
28.--There's coffee and tea:you can have____.
---Thanks.
A.either B.each C.one D.it
29.If you were____.I'm sure that you would make_____mistakes in the test.
A.more careful,less B.more carefully,more
C.more careful,fewer D.more carefully,less
30.The little girl began to learn Enlish_____the age of four.
A.in B.at C.for D.to
31.We're going to the theatre in John's car.You can come with us____you can meet us there later.
A.but B.and C.or D.then
32._____is a well-know scientist.
A.This Jack's old friend B.That Jack's old friend
C.This old friend of Jack D.This old friend of Jack's
33.The teacher asked us_____so much noise.
A.don't make B.not make C.not making D.not to make
34.Do you know if_____back next week?If he______back,please let me know.
A.he comes,will come B.will he come,come
C.he will come,comes D.will he come,will come
35.The Games of_____Olympiad in 2008 was held in the city of beijing.
A.39 B.the 29 C.29th D.the 29th
求英语答案最好写下原因哦
1.C,问句是问在去中国之前,明显是过去完成时,即had done.,疑问句的话,had 提前.
2.A ,It's going to 这个是表示将来,所以后面用is,it is batter to do sth,这句话的意思是最好不要出去就在家里看电视.
3.B 感叹句,how 后面加形容词.把nice 提前,其他的按正常语序.
4.c rember 后面加doing,五岁的时候是被大人带着去的,所以选被动,五岁直接说five yeas old
5.B Speed at 固定用法.
6.A
看对不对,对的话我会继续回答.