单项选择题

Everything is ready, ______

A．isn't it
B．aren't they
C．is it
D．are they
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单项选择题
______ one has a child will one realize how great one's parents are.
A．Until
B．Not until
C．It is not until
D．Until not
单项选择题
After pondering over this problem for quite a long time, he finally ______ a plan for the committee of their company to consider.
A．put out
B．put away
C．put aside
D．put forward
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