题目内容

根据所给单词的适当形式填空。

1Things went from bad to worse. The longer people waited for helpthe ___the situation became(danger)

2A large amount of research ________ to understand sleep recently (do)

3The old dresser needs ____ again(paint)

4He has some problems _____ up the plan(make)

5Teenagers should ____ to choose their own friends(allow)

试题答案

1、1more dangerous  2has been done  3paintingto be painted  4making   5be allowed

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