单项选择题

The tail exhaust pipe of the motor vehicle _________poisonous smoke.

A．disposed
B．emitted
C．launched
D．projected

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单项选择题

Her sole aim was to take shelter _________the storm and to get herself warm.

A．for
B．from
C．in
D．over

单项选择题

I must go now. _________, if you want that book I'll bring it next time.

A．Accidentally
B．Incidentally
C．Occasionally
D．Subsequently

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