A large quantity of water _________ polluted in the past twenty years across China.

66. A large quantity of water _________ polluted in the past twenty years across China.

1. is               B. are               C. has been           D. have been

67. Generally , students’ inner motivation with high expectation from others _______essential to their development.   
     A. is                 B. are                  C. was               D. were
68. He managed to make himself______ with his ______ English

1. understand; breaking             B. understood; broken

C.  understood; breaking             D. understood; broken
69. The manager discussed the plan that they would like to see ______ the next year.

1. carry out    B. carrying out   C. carried out   D. to carry out

70. You may depend on ______ that Tom will help you with your English.

1. one       B. what        C. which         D. it

答案
  CADCD