1.It has became a new policy that ___________________(这个部门领导的职位每年轮换一次)。

2._____________________(第一次来这里的普通游客也许看不出差别),but the staff members know it.

3.We get news that________________________(凡是想参加这次旅游的人都必须先订机票)。

4.They didn’t talk much_________________(害怕别人听到了)。

5.The stylist confessed that _________________(这项工程预计约耗时三至四年)。