16. Nothing taught by others can have the same effect on you as _____ learned by yourself.

18. --- What do you think of the furniture on exhibition?

--- Well, great! But I don’t think much of _______ you bought.

19. The best job is _______ which uses your skills in doing something together with your interest in the subject.

21. The third and last chapter _______ by Professor Chen.

23. _______ the plane have taken off on time?

--- I’m afraid not. The fog was too thick then.

24. The car ran into a crowd of middle school students, _______ to hospital immediately.

26. After having finished mopping the floor, he puts the mop back ______ it belonged.

27. I was so busy last year that I was almost mad. So I spent _______ I had with my family last month after I finished the project.

30. The couple are always quarrelling because they don’t seem to ______ the same point of view in anything.

31. Just at that time, a strange young man broke into our office, his hands _____ in his pockets.