She toured China _____ she was fourteen. [ ]A. whenB. whyC. whatD.

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She toured China _____ she was fourteen. [ ]
A. when
B. why
C. what
D. how

答案

举一反三

_____it was a little cold, ______we all came here.[ ]
A. Though, but
B. /, though
C. Though, /
D. But, /

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He wants to be a policeman ______ it"s exciting.[     ]
A. when
B. because
C. where

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Peter: Hi, Sally. Come and have a look at my photos.
Sally: Are these the photos you took in Africa, Peter?
Peter:   小题1:   Look, this is a wildebeest. It’s an animal in Africa.
Sally:   小题2:
Peter: No, it doesn’t. It only eats grass.
Sally: Are there a lot of animals in Africa?
Peter:   小题3:
Sally: Oh, this photo looks interesting. What are you doing there?
Peter:   小题4:
Sally: Did you have a good time there?
Peter: Of course.   小题5:

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Several days has passed_______the air crash（空难） happened.
A.since B.after C.as

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— ____can we board our plane? — In twenty minutes.
A.How soon B.How long C.How often

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