题目内容：

根据各小题Ａ句的意思完成Ｂ句，使两句的意思基本相同。每空限填一个单词。

1.A: His friend didn't know what he should do.

B: His friend didn't know           do.

2.A: What was wrong with the old man？

B: What                       the old man？

3.A: He found it was not easy to sleep.

B: He found               to sleep.

4.A: He went to bed at twelve last night.

B: He        go to bed          twelve last night

5.A: She was worried and her friend was worried, too.

B: She was worried and                              her friend.

6.A: She always makes me happier when I’m unhappy.

B: She always            me            when I’m unhappy.