单项选择题

Observations were made ____________the children at the beginning and at the end of pre-school and first grade.

A．towards
B．of
C．on
D．with
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单项选择题
I was speaking to Ann on the phone when suddenly we were ___________.
A．hung up
B．hung back
C．cut down
D．cut off
单项选择题
Christmas is a Christian holy day usually celebrated on December 25th__________the birth of Jesus Christ.
A．in accordance with
B．in terms of
C．in favor of
D．in honor of
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