单项选择题
You have caught a bad cold so you（）stay in bed now
A.must
B.need
C.have
D.shall
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You have a good voice.（）
A.Thank you
B.Not at all
C.Just so so
D.My voice isn't good -
单项选择题
You had better（）a doctor as soon as possible.
A.seeing
B.saw
C.see
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单项选择题
You can take as many as you like because these handouts are free of（）
A.fare
B.charge
C.money
D.pay
