问题

Many athletes are clear that the Olympic Games are the only time ________ they will be watched by thousands of millions.

A:that
B:which
C:where
D:when

正确答案是：

同类题型

John was late for the business meetingbecause his flight had been _______ by a heavy storm.

ill people die of in 100 years If you thinkthat is a simple question, you ______ attention to the revolution taking placein biotechnology

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________ books aren’t old. ________ are new.