填空题

It is essential that all applications (fill)（）no later than August 15.

【参考答案】

be filled

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单项选择题

Why do some people give up trying to learn a foreign language（）

A. Because they can use Keith’ s machine now.
B. Because it is like hard work.
C. Because they have difficulties to go abroad.
D. Because they cannot communicate with foreigners.

填空题

The secretary worked late into the night, (prepare)（）a long speech for the president.