Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
| A．since | B．after | C．unless | D．before |
相关试题
The police finally found the robber ______near a river_______
| A．lying; dead | B．lay; died | C．laid; death | D．lain; dying |
You can’t shut your eyes to the fact _______he did was right.
| A．that | B．what | C．which | D．that what |
I must thank my parents ___________ to be a college student.
| A．to make it possible for me | B．to make it possible to me |
C．f or making it possible for me |
D．for making it possible to me |
They set off________a trip________London.
| A．on; for | B．on; to | C．for; to | D．for; for |
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