问题

19. They________a lot of suggestions for improvingthe workers’ living conditions.

A:should
B:put forward
C:put on
D:put in

正确答案是：

同类题型

_______ makes the school famous is_______more than 90% of the students have been admitted to universities.

What happened________the old man last night—He got lost and couldn’t find the way home．

The library needs ________, but it’ll have to wait until Sunday

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Where did you get to know her?— It was on the farm _______ we worked.