I study math by ____ lots of exercises.[ ]A. did B. doing C. doD. to do
题型：同步题难度：来源：
| I study math by ____ lots of exercises. |
| [ ] |
A. did
B. doing
C. do
D. to do |
答案
B
|
举一反三
| If you practice _____ English every morning, you will improve it quickly. |
| [ ] |
A. to read
B. reading
C. read
D. be reading |
| She said she had some trouble _____ her homework. |
| [ ] |
A. finish
B. finishing
C. to finish
D. finished |
| Boys and girls, do you have any trouble the foreigners? |
| [ ] |
A. to understand
B. understand
C. understanding
D. understood |
| I think _____ vocabulary lists ____ us a lot. |
| [ ] |
A. make, help
B. making, helps
C. makes, helping
D. making, help |
| Does she like ________TV? |
| [ ] |
A. to watching
B. watching
C. seeing
D. looking |
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