89. --I saw Betty go to Grandpa Li's home just now.

　 --Yes. She’s often seen _________ the old man with the housework..

　 A: help　　　　　 B. to help　　　　 C. helps　　　　　 D. helped

88. --Alice, you ________ on the phone. 　　　--I' m coming. Thanks.

　 A. want　　　　 B-. are wanted　　　 C. are wanting　　 .D. have wanted

87. The trees must _______three times a week.

　 A. water　　　　 B. watering　　　　 C. be watered　　　 D. waters

86. --What do you think of the football match yesterday?

　 --Well, it' s surprising. The strongest team of our school ________.

　 A. was beaten　　 B. won　　　　 C. scored　　　　 D. was filled

85. --Can I help you, sir? 　　　--Yes, I bought the radio here yesterday, but it ______.

　　 A. didn't work　 　B. won't work　　 C. can't work　　　 D. doesn't work

84.--What did you do last night? 　　--I _______TV with my family.

83. The students will go to the Summer Palace if it ________tomorrow.

　 A. won' t rain　　 B. isn't raining　 C. doesn't rain　　 D. isn't rain

82.--Why not go to see the dolphin show with me? --Because I ________it.

　 A. saw　　　　　 B. will see　　　　 C. see　　　　　　 D, have seen

81.--How much did you ________for the pen? --Five yuan.

　 A. cost　 　　　　B. take　　　　　 C. pay　　　　　 D. buy

80. Could you _______ me your bike? Mine is broken. --Sure. It's there.

　 A. borrow　　　　 B. lend　　　　　 C. giving　　　　 D. return