单项选择题

It's self-evident that no one would have time to know everything ______going on in the world.

[A] there is
[B] as is
[C] it is
[D] what is
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单项选择题
The people in the snow-stricken areas need much more food than ______to them by the airforce.
[A] being delivered
[B] have been delivered
[C] delivered
[D] has been delivered
单项选择题
The medical treatment you have received from the hospital will ensure you a speedy ______from your illness.
[A] restoration
[B] renewal
[C] recovery
[D] retreat
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