1．应该每天打扫教室。

  The classroom should                       every day.

2．昨天他没被允许参加考试。

He            allowed to            the test yesterday.

3. 我正在考虑飞往上海而不是乘火车。

I’m thinking about            to Shanghai rather than            there by train.

4．青少年不应过久熬夜。

Teenagers shouldn’t                       too late.

5．令我吃惊的是，他根本不做笔记。

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1、1．be, cleaned      2．wasn’t, take         3．flying, going      4．stay, up

5．To my surprise, he didn’t take notes at all.