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[单选题]
The experiment shows that proper amounts of exercise, if ________ regularly, can improve our health.(1分)
A
being carried out
B
carrying out
C
carried out
D
to carry out
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参考答案
试题答案：
C
答案解释：
解题思路： 考察非谓语动词用法。IF 引导的省略句， proper amounts of exercise为carry out 动作的接收者，故用过去分词表示被动。句意：实验表明，如果定期进行适量的运动，我们
的身体健康状况会改善
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My campus is so beautiful that I really lack words with ____ to describe it.(1分)
2.3When is it appropriate to take a holiday according to the passage?____(1分)
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