2 . 你知道他理解慢，因此你必须要对他有耐心。
You know he is slow at understanding, so you have to ________________ him.

3 . 他们到底出了什么事，到现在仍可以说是个谜。
What happened to them remains ________________ a mystery.

4 . 目前，它仅仅被看作是中国科学技术史下面的一个分支。
At present, it is only regarded as ________________ Chinese science and technology history.

5 . 她把牛奶收拾完后转过身来。
She finished ________ the milk ________ and turned around.

6 . “他在那儿。”阿里说着朝几棵树挥了挥手。
“He’s over there,” said Ali, ________________ some trees.

8 . 这个房间又脏又乱。
The house ________________.

9 . 1400名支持者尽全力守着规矩，结束时排成队平静地离场。
The 1,400 fans were ________________ and filed out peacefully at the end.

10 . 两个警官去了他家，把他带走了。
Two police officers went to his house and ________________.