44. He set about ______ the experiment last month and succeeded ______ a good result.

　 a. doing, in getting　　 b. doing, to get　　 c. to do, in getting　　 d. to do, to get

43. We don’t allow ______ in the school.

　 a. smoking　　　 b. to smoke　 　　c. they smoking　　　 d. anyone smoked

42. We are looking forward to ______ you at our party, but we wouldn’t mind ______ soon if you have to.

　 a. have, you to leave　　　 b. having, your leaving

　 c. have, your leaving　　　 d. having, your being left

41. ______ the work in that way would cost much more time and money.

　 a. If doing　　　 b. Do　　　 c. To be doing　　　 d. Doing

40. Trying without success is better than ______ at all.

　 a. not to try　　　 b. to not try　　　 c. not trying　　　 d. trying not

39. Did you have difficulty ______ the professor’s house in the dark?

　 a. to find　　　 b. finding　　　 c. by finding　　　 d. to have found

38. The children are fond of ______ to the New Year party, and they don’t mind ______ there till midnight.

　 a. inviting, keeping 　　b. invite, keep　　

　c. be invited, stay　　 d. being invited, being kept

37. He kept ______ how things were going on in the earthquake areas.

　 a. informed us of　　 b. informing us of　　 c. us informing of　　 d. informing on

36. ---What made his mother angry?

　 ---______.

　 a. Because he had lost the ticket　　 b. Because of his having lost the ticket

　 c. As he had lost the ticket　　　 d. Having lost the ticket

35. They dare not tell the truth, for they are afraid ______.

　 a. to be laughed　　 b. of laughing at　　 c. of being laughed at　　 d. being laughed at