41) Before ____ the house, you should get a surveyor____ over it. A) buying...looking B)having bought...to look C) buying...to have looked D) buying...to look 42)In some countries people favor ____ together even though there is much more space. A) to stay B) stay C) staying D) stayed 43)“Why was Fred so upset?”“He isn't used ____ criticized.” A) be B) to be C) to being D)having been 44) It's no use ____ to get a bargain these days. A) to expect B) expecting C) wanting D) you expect 45)“Why were you so late for work today?”“____ to the office was very slow this morning because of the traffic.” A) Driving B) I drove C) To drive D) That I drove 46)It was impolite of him ____without ____good-bye. A) to leave, saying B) leaving, to say C) to leave, to say D) leaving, saying 47) He kept ____to his parents. A) putting off to write B) to put off to write C) putting off writing D) to put off writing 48)I'll go with you after I get through with ____the house. A) cleaning B) to cleaning C) to be cleaned D)having cleaned 49) With apples at 25 cents a pound, we couldn't resist ____four pounds. A) to take B) took C) taking D) have taken 50)How can you keep the machine ____when you are away? A) run B) to run C) running D) being run