1 . I think Tom and John must have been in charge of yesterday’s party, ________?

A．haven’t they

B．hadn’t they

C．weren’t they

D．didn’t they

2 . ________ (订阅) to some English magazines, as is suggested, and you'll find them very useful. （根据汉语提示单词拼写）

3 . We need to know the customs of a country so that we do not_________(使尴尬)others.

4 . Since we disagree on the matter, let's v_________ on it.

5 . Study step by step, and never______________(上当受骗)the idea that you’ll succeed overnight.

6 . 想象一下在紫禁城上演这出歌剧吧——不可能有比这儿更令人叹为观止的场景了！

7 . Do not u_______ (从事) exercise for a few hours after a meal to allow food to digest.

8 . 不要让婴儿暴露在强烈的阳光下。这对他们的皮肤有害。
Do not   ___________ babies   ___________   strong sunlight. It's harmful to their skin.

9 . 不要在动物身上试验这种药。
Don't ___________ the drug ___________ on animals.

10 . Do not u_______ (从事) exercise for a few hours after a meal to allow food to digest. (根据中英文提示单词拼写)