1 . There _______________ three books and a pen on the desk.
桌子上有三本书和一支钢笔。

2 . Not only John and Tom but also their sister, Mary, _______________ great interest in the piano lessons.　
不仅是约翰和汤姆，就连他们的妹妹玛丽，也对钢琴课有极大的兴趣。

3 . The number of people invited _______________ one hundred, but a number of them ______________ absent for different reasons.　
收到邀请的总共有100人，但很多人因为各种原因缺席了。

4 . With more forests being destroyed, huge quantities of good earth _______________ being washed away each year.
由于更多的森林被毁，每年有大量的沃土被冲走。

5 . A quantity of time _______________ been wasted on the project.
大量的时间被浪费在了这个项目上。

7 . Altogether more than 70 percent of the surface of the earth _______________covered by water.　
总共有超过70%的地球表面被水覆盖。

8 . The police _______________ searching for the murderer in the mountain.　
警察正在山里搜寻杀人犯。

9 . Every boy and every girl _______________ to attend the party held on Sunday.　
每个男生和女生都希望参加周日的聚会。