单项选择题

A. Because burning them may cause fire accidents.
B. Because burning them may cause air pollution.
C. Because burning them may cause out of breath.
D. Because burning them may cause water pollution.
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单项选择题
A. His vacation has been postponed. B. He needs to take his medicine on vacation. C. He is going to change his allergy medicine. D. His allergy will no longer bother him.
A. His vacation has been postponed.
B. He needs to take his medicine on vacation.
C. He is going to change his allergy medicine.
D. His allergy will no longer bother him.
单项选择题
A. Because he wanted to refuel the bus. B. Because he wanted to have a rest. C. Because he wanted to relieve himself. D. Because he wanted to have a meal.
A. Because he wanted to refuel the bus.
B. Because he wanted to have a rest.
C. Because he wanted to relieve himself.
D. Because he wanted to have a meal.
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