单项选择题

The missing boys were last seen ______ near the river.

A．playing
B．to be playing
C．play
D．to play
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单项选择题
Stand over there ______ you’ll be able to see it better.
A．or
B．while
C．but
D．and
单项选择题
What is the woman doing in much of her free time
A．Learning German.
B．Playing the piano.
C．Going to do some sports.
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