40. The government should take m_____________ to control pollution.

39. We had nothing in c_______________.

38. Karl Marks d______________ himself to his revolutionary work.

37. Before use, the b______________ should be charged.

36. His laziness l__________ to his failure.

35. More and more animals are d____________ out.

34. You can buy whatever you like in the d_______________ store (百货公司).

33. Mother is busy p_____________ for the dinner in the kitchen.

32. What is the best t_________ for this passage?

31. They are not only friends but also c______________ in the match.