1£®It is necessary that we keep the young generation ¡¡informed¡¡ (inform) of the current affairs.

2£®It is demanded that the books ¡¡(should) be returned¡¡ (return) to the school library within two weeks.

3£®My parents didn't approve ¡¡of¡¡ my leaving school this year and I had to accept it.

4£®I was employed to assist the manager ¡¡with¡¡ his duties.

5£®I have an ¡¡appointment¡¡ (appoint) with the manager of that company in the evening.

6£®For example£¬I can just concentrate on ¡¡reading¡¡ (read) for a short time.

7£®¡¡To acquire¡¡(acquire) a good knowledge of English, he gave up his job and went to study in an English school.