题目内容
() 5. — Dad,must we wait until the light becomes green?
—Yes,Tm afraid we .That's the traffic rule.
A. can B. may
C. have to
5. C
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题目内容
() 5. — Dad,must we wait until the light becomes green?
—Yes,Tm afraid we .That's the traffic rule.
A. can B. may
C. have to