单项选择题

If you______ change your mind, please let us know.

A．shall
B．should
C．will
D．would
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单项选择题
The poetry of Ezra pound is sometimes difficult to understand because it contains so many ______ references.
A．obscure
B．acute
C．notable
D．objective
单项选择题
______ we need to complete the construction is two million dollars.
A．All what
B．That all
C．That
D．What
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