单项选择题

A．A new fuel for buses.
B．The causes of air pollution.
C．A way to improve fuel efficiency in buses.
D．Careers in environmental engineering.
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单项选择题
A．Don’t write the character reference for Alex.B．Don’t tell the truth about Alex in the character reference.C．To go out and have coffee with her.D．To go to the restaurant with her.
A．Don’t write the character reference for Alex.
B．Don’t tell the truth about Alex in the character reference.
C．To go out and have coffee with her.
D．To go to the restaurant with her.
单项选择题
A．Whether the woman needs his help.B．Whether the woman has any pets.C．Where the woman is going.D．Whether the woman can take care of his pet.
A．Whether the woman needs his help.
B．Whether the woman has any pets.
C．Where the woman is going.
D．Whether the woman can take care of his pet.
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