问题

It is recommended that you ________ your accommodation in advance in tourist season, as you may find all the best hotels are not accessible.

A:book
B:must book
C:will book
D:shall book

正确答案是：

同类题型

What do you think of the concert?—— Oh, it was______success.

Are these his friends –No, ______.

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It was no surprise that an awful accident ____ occur the day when they were drunk