题目内容：

完成句子 (不限词数)。

1.There was a heavy curtain _____________ the light (遮住，挡住).

2.无论广告多么好，如果产品不合适，人们也不可能被说服去买的。

_______________ an advertisement is, people are unlikely to be persuaded if the product is unsuitable.

3. 长时间接触广告能改变人们的看法。

On the other hand, ________________advertisements can help to change our opinions over time. (用expose表达)

4.看你浑身湿透了。你一定赶上大雨了吧！

You are wet all over. You ________________ (be) caught in the rain.

5. 我们决不能向他们的不合理要求让步.

We must not________________ their unreasonable demands.