单项选择题

"Please don't ______ to ask me if you have any questions.""Thank you very' much. I'll do that."

A．pause
B．stop
C．wait
D．hesitate
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单项选择题
______ does the No. 3 bus run Every ten minutes.
A．How soon
B．How fast
C．How often
D．How long
单项选择题
John went to the ______ to buy a pair of shoes yesterday.
A．shoes store
B．shoes’ store
C．shoe’s store
D．shoe store
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