单项选择题

（）the new teacher appeared at the door, the students stopped talking.

A．As soon as
B．For the moment
C．While
D．The time

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单项选择题
The child is lonely; he would be happier if he had someone that he could play（）

A．about
B．for
C．with
D．at
单项选择题
The weather（）fine, we decide to go for a picnic.

A．having been
B．being
C．was
D．is
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