单项选择题

A．They should help maintain the equipment.
B．They should teach their children how to use the equipment.
C．They should stop their children from climbing ladders.
D．They should keep a watchful eye on their children.
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单项选择题
A．On a busy street.B．In a Hong Kong hotel.C．At an airport.D．At a booking office.
A．On a busy street.
B．In a Hong Kong hotel.
C．At an airport.
D．At a booking office.
单项选择题
A．The importance of good manners.B．The art of saying thank you.C．The secret of staying pretty.D．The difference between elegance and good manners.
A．The importance of good manners.
B．The art of saying thank you.
C．The secret of staying pretty.
D．The difference between elegance and good manners.
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