共50条信息
Dark matter gives out no light and only because of its gravity effect on visible matter ______ see its existence.
— _______, but all efforts made no difference.
If you go, and_______ _______ ____
He kept a little notebook, in which the names and addresses of his friends.
A．wrote B．writing C．was written D．were written
_________ it rain, the crops would be saved.
A．Will B．Should C．Would D．Could
__________ the clouds, you would find the airplane in the sky easily
A．Had it not been for B．If it were not
C．If it had not been for D．Were it not for
_____, we would go on a picnic．
A．The weather is fine B．Should the weather be fine
C．The weather be fine D．Would the weather be fine
_______ fired, your health care and other benefits will not be immediately cut off.
A. Would you be B. Should you be C. Could you be D. Might you be
_______ Tom, we wouldn’t have been late for the last bus.
A. If we didn’t wait for
B. If we haven’t waited for
C. we hadn’t waited for
D. Had we not waited for
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