填空题

The two countries are striving to (strong) ______ economic cooperation.

【参考答案】

strengthen
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If the pills (take) ______ on time, he would have been saved.
单项选择题
A) They are playing computer games. C) They are discussing. B) They are swimming. D) They are studying.
A) They are playing computer games. C) They are discussing.
B) They are swimming. D) They are studying.
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