单项选择题

There have been great advances in the ______ of cancer.

A．process
B．treatment
C．instruction
D．influence
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单项选择题
In my opinion, she left the letter there ______ so that you'd see it.
A．technically
B．eagerly
C．normally
D．deliberately
单项选择题
You have been sitting on my hat and now it is badly out of ______.
A．date
B．shape
C．order
D．balance
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