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
It takes about 365N days for the Earth to ____________ around the Sun in its orbit.
A．rotate
B．roll
C．spin
D．revolve
单项选择题
He likes fiction, ____________ I like poetry.
A．while
B．because
C．although
D．so
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