单项选择题

"How long ______________ in the sun You are working too hard!"

A．have you sewn
B．did you sew
C．have you been sewing
D．are you sewing
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单项选择题
My father had to be __________ with this small success.
A．satisfied
B．satisfactory
C．pleased
D．content
单项选择题
Your proposal that they ____________ their conversation in French is quite reasonable.
A．are to carry on
B．will carry on
C．carry on
D．must carry on
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