9．De counselors will reply _________ them．

8．We often hear _________ him．

7．What are you crazy _________?

6．The youth prefer using ICQ _________ using e-mails．

5．Eating too much is bad _________ our health．

4．I really don’t have enough time to revise _________ tests.

3．Do you know how to deal _________ the toy?

2．Our teacher is very strict _________ us．

1．We often see him quarrel _________ his father．