A large number of engineers ___ to Africa by our government to help the people t
题型：同步题难度：来源：
| A large number of engineers ___ to Africa by our government to help the people there every year. |
| [ ] |
A. have sent
B. will send
C. are sent
D. was sent |
答案
| C |
举一反三
—_________ was light bulb invented ________ ?
— Thomas Edison. |
| [ ] |
A. When, /
B. Who, by
C. Who, /
D. What, for |
| I won"t go to her party unless my best friend Jack ________. |
| [ ] |
A. will invite
B. will be invited
C. is invited
D. invites |
—Would you like to go to the movie with us tonight?
—Sorry, but I"m afraid that I to go out tonight. |
| [ ] |
A. am allowed
B. don"t allow
C. will allow
D. won"t be allowed |
—Will you come to this dinner party?
—I won"t come unless Jenny _____. |
| [ ] |
A. will be invited
B. is invited
C. will invite
D. invited |
| When _____ the telephone _____ ? |
| [ ] |
A. did ; invent
B. was ; invented
C. was ; inventing
D. does ; invent |
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