69. ____ more attention, the tree could have grown better.

　 A. Given　　　　　 B. Giving　　　　　　　　　　 C. Having given　　 D. To give

68. When I went in, he was lying on the floor ____ at the ceiling.

　 A. to stare 　　　 B. stared　　　　　　　　 C. was staring　　　　 D. staring

67. “You can’t catch me” Janet shouted, ____ away.

　 A. run　　　　　　　 B. running　　　　　　 C. to run　　　　 D. ran

66. Seeing the fat lady burst into ____, the children couldn’t help _____.

　 A. crying; laughing　 B. tears; laughter　　 C. tears; laughing　 D. crying; laughing

65. Recently I have been busy with a paper on pollution, so I can’t help ____ the housework

　at home.　 A. doing　 B. to do　　　　　 C. to make　　　 D. making

64. The rich counties must do whatever they can ____ others.

　 A. help　　　 　 B. helping　　　　　　 C. to help　　　　　　　　　　 D. to be helping

63. Mr Black is on time for everything. How ____ it be that he was late for the opening

　ceremony?　 A. can　　　　　　　 B. should　 D. may　　　　　　 D. must

62. “Excuse m. Is this the right way to the Summer Palace?

　 “Sorry, I am not sure. But it ____ be.　 A. might B. will　　 C. must　 D. can

61. “Tom graduated from college at a very young age.”

　 “Oh, he ____ have been a very smart boy then.”

　 A. could 　　　　 B. should　　　　 C. might　　　　 D. must

60. You ____ be tired. You’ve only been working for an hour.

　 A. must not　　　 B. won’t 　　　　　　　 C. can’t　　　　　 D. may not