单项选择题

_______, follow the directions on the bottle carefully.

A．When taken drags
B．When drugs are taken
C．When takes drags
D．When taking drags
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单项选择题
Were it not for their support and help, we ______ able to finish the task ahead of time.
A．were not
B．should not have been
C．are not
D．would not be
单项选择题
Some old people don't like pop songs because they can't ______ so much noise.
A．resist
B．experience
C．tolerate
D．sustain
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