Even scientists ___ sure if there are UFOs. [ ]A. aren"t B. don"t C. can"t
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| Even scientists ___ sure if there are UFOs. |
| [ ] |
A. aren"t
B. don"t
C. can"t |
答案
举一反三
| There is going to ______ a school meeting this Friday. |
| [ ] |
A. has
B. be
C. have |
| His ambition is ______ a basketball player like Yao Ming. |
| [ ] |
A. to be
B. be
C. become
D. being |
| They ______ friends since they met for the first time. |
| [ ] |
A: have made
B: made
C: have been
D: were |
| When I got to the cinema, the film _____ for five minutes. |
| [ ] |
A: had started
B: had been on
C: has been on
D: has started |
| _____ in the sun _____ bad for eyes. |
| [ ] |
A: Reading; is
B: Reading; are
C: To read; is
D: To read; are |
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