单项选择题

A．Environmental protection.
B．Pest control.
C．House construction.
D．Fire prevention.
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单项选择题
A．Work on his paper after class.B．Postpone his meeting with Professor Green.C．Go swimming with his friends.D．Go to see Professor Green immediately.
A．Work on his paper after class.
B．Postpone his meeting with Professor Green.
C．Go swimming with his friends.
D．Go to see Professor Green immediately.
单项选择题
A．Organize another activity.B．Choose another restaurant.C．Wear different clothes.D．Ask more friends to go together.
A．Organize another activity.
B．Choose another restaurant.
C．Wear different clothes.
D．Ask more friends to go together.
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