14.Although it was raining heavily,the workers didn't stop__ ___ in the field.( )
| A. | working | B. | to work | C. | worked | D. | work |
13.She devoted as much time as she could__ ___ others.( )
| A. | help | B. | helped | C. | helping | D. | to helping |
12.Mr.Wu __ ___ this math problem__ ___ him many times,but he still doesn't understand it.( )
| A. | explains; to | B. | has explained; for | ||
| C. | has explained; to | D. | explained; with |
11.He never__ ___ learning English.That was why he was successful at last.( )
| A. | gave in | B. | gave out | C. | gave up | D. | gave away |
10.Eddie is lazy enough __ ___ all day without__ ___ anything.( )
| A. | to asleep; doing | B. | to sleep; do | ||
| C. | to sleep; doing | D. | sleeping; to do |
9.--Look!There is__ ___ beautiful rainbow in the sky.
--Take the books for me,I'd like to take a photo of__ ___ rainbow before it disappears.( )
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--Take the books for me,I'd like to take a photo of__ ___ rainbow before it disappears.( )
| A. | a; the | B. | the; a | C. | the; the | D. | a; a |