单项选择题

All ______ is needed is a supply of oil.

[A] the thing
[B] that
[C] what
[D] which
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单项选择题
The country's ______ is based on trade.
[A] wealthy
[B] wealth
[C] possession
[D] possessor
单项选择题
They are all ______ little children that you are not able to look after ______ many of them by yourself.
[A] so; so
[B] such; so
[C] such; such
[D] so; such
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