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39It’s a good ( ) to eat with the mouth closed.

38It is obvious that there are at least two vitamins. ( ) is soluble in fat; ( ) is soluble in water.

37 Neither of your proposals ( ).

36If a child is absent ( ) school for long periods, he should be given extra work.

35 He is working very hard to ( ) the lost time in the past 10 years.

34The fact ( ) money orders can usually be easily cashed has made them a popular form of payment.

33( ) with the size of the whole earth, the highest mountain doesn’t seem high at all.

32More ( ), less speed.

31Mary likes ( ) very much, but she didn’t go ( ) last Sunday.

30He ( ) when the bus came to a sudden stop.