80.We have all learned a lot from the.

20.His knowledge of language and international businesshim a lot in his work.

19.Nobody but Smith and Johnin the lab yesterday.

18.一Two months quite a long time.—Yes, I＇m afraid that he will miss a lot of lessons.

17.Therea desk and twenty chairs in the classroom.

16.Whether I will go or stay on the information about my mother＇ s health condition from thedoctor.

15.Not only I but also Jane and Mary tired of having one examination after another.

14.The manager, together with his wife and two sons, to arrive on the first flight the next morning.

13.The parenting stylea strong influence on the character of the children.

12.His wife as well as heinvited to the business party.

11.Neither Mary nor her sisterto the party.