赞题库-背景图
单项选择题

Only when you have obtained sufficient data ______ come to a sound conclusion.

A．can you
B．would you
C．you will
D．you can
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热门试题

单项选择题The President made his last public ______ before his term of office ended.

A．appearance
B．engagement
C．gathering
D．meeting

单项选择题A．toB．upC．above.D．on

A．to
B．up
C．above.
D．on