18.______ a little earlier, I would have caught the train.
A. Did I leave
B. Would I leave
C. Had I left
D. Have I left
【正确答案】C
【答案解析】本题考查的是if引导的虚拟条件句,省略了if要把had提前。
2.He found _______ difficult to study maths.
A. it
B. that
C. as
D. too
【正确答案】A
1.This is ________ good reading habits are not only an important study skill for the student, but also an important life skill for anyone.
A. that
B. why
C. where
D. when
【正确答案】B
【答案解析】本题考查词义辨析。分析句意,空格处用why比较好。why引导表语从句。
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