题目内容

You will fall behind others you work hard.

A. If
B. unless
C. though
D. since

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We will go to Tian'anmen Square to watch the raising of national flag if it tomorrow.

A. will rain
B. rains
C. doesn't rain
D. won't rain

Mrs. Smith explained the problem clearly all of us could understand her.

A. until
B. although
C. so that
D. as soon as

The Bund looks beautiful at night that it attracts a lot of tourists every day.

A. very
B. so
C. such
D. quite

You will lose the ability to pay attention, plan and stay active after one or two nights you can sleep well.

A. until
B. when
C. unless
D. if

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