单项选择题

Smoking does great harm to our health. ( ) is smoking allowed in public places.

A．In no time
B．At a time
C．At all times
D．At no time
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单项选择题
It （） around six o'clock when I drove back yesterday because it was already dark.

A. must have been
B. must be
C. was to be
D. had to be
单项选择题
英译汉：“Baltimore”，正确的翻译为( )。
A．巴尔的摩
B．贝鲁特
C．巴马科
D．巴拿马
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