2．We have to ____________ the cause of the accident.

　　答案：look into

　　3．The bad weather ____________ bad cold ____________ the children.

　　答案：brought；on

　　4．He ____________ when he was 18 years old.

　　答案：joined up

　　5．Have you been ____________ your aunt recently?

　　答案：in contact with

　　Ⅲ.完成句子

　　1．It looked as though __________________ for many years.

　　看上去他们好像是多年的老朋友。

　　答案：they had been friends

　　2．____________ she talks about the rumour, ____________ I like her.

　　她谈论这谣言越多，我越不喜欢她。

　　答案：The more；the less

　　3．He ____________ in America for five years before he came here.

　　在他来这之前，他在美国住了5年。

　　答案：had lived

　　4．____________ his answer, he sent another telegraph to his company.

　　由于没有得到他的答复，他又发了一封电报给他的公司。

　　答案：Not having received

　　5．He ____________ about the bad news, for he is unhappy.

　　他肯定被告知了那个坏消息，因为他不高兴。

　　答案：must have been told

　　Ⅳ.单句语法填空(不多于3个单词)

　　1．The film is intended ____________ adults, so the children can not go and see it.

答案：for　句意：这部电影是给成年人看的，所以孩子不能去看。be intended for sb./sth.为某人/某事物而提供(设计)的，为固定搭配，符合题意。