超星 - while 的语法练习 - 查题吧

单选题

____ most bamboo blooms every year, there are some species that flower only two or three times a century.

A. Whenever
B. That
C. While
D. However

单选题

_____some people criticize graffiti for being ugly and destructive, those graffiti lovers still see it as a real art.

As
B. While
C. Once
D. Until

单选题

—What happened to Tom?—He was crossing the street_____a motorbike hit him from behind.

A. while
B. when
C. until
D. because

单选题

I was halfway back to the cottage where my mother lived ______ Susan caught up with me.

A. when
B. while
C. until
D. through

单选题

We had just had our breakfast ______ an old man came to the door.

A. when
B. while
C. until
D. through

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