53.A swap　　　　　 B change　　　 C exist　　　 D influence

52.A be corrected　　 B be copied　　 C be read　　 D be written

51. A find out　　　 B carry on　　 C work out　　 D work on

50.A map　　　　　 B plan　　　 C decision　　 D discussion

49.A excited　 　　　　B experienced　　 C interesting　　 D extra

48. A mysterious　　 B surprised　　　 C pleased　　 D pleasant

47.A floor　　 B place　　 C land　　 D playground

46.A buy　 B decorate　 C build　　 D find

43. A. class　　　　　 B. crowd　　　　 c. audience　　　　 D. family

Building a house is an operation which costs quite a lot of money. Suppose you plan to 46 　a house, your first step is to find a suitable piece of 　47 , You will probably try to find a sunny place, in a 　48　 　situation, near stores and bus stops, not too far from your friends and the place where you work.

Next you will find an 　49　 　builder. And together with the builder you will make a　 50　 , The builder will draw it. The builder will also 　51　 the cost of your house. He will estimate(估计)the cost of the wood, the glass, and everything else that he must use in building the house. Later on, when he starts to build, this estimate must　 52 , because the prices may the prices may　 53　 , and many other thing may happen between the time when he makes the estimate and the time when he builds the house.

　 54　 　the builder gives you his estimate, you may wish to change your plan. You may find that some of the things you wanted at first cost too much, or that you can　 55　 　a little more and add something to your original plan.

42. A. already　　　　 B. always　　　　 C. almost　　　　　 D. also