赞题库-背景图
单项选择题

Do help yourself to some fruit, _______you

A．can’’t
B．don’’t
C．wouldn’’t
D．won’’t
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热门试题

单项选择题James has just arrived, but I didn’’t know he_______until yesterday.

A．will come
B．was coming
C．had been coming
D．came

单项选择题What steps could be taken to improve the air

A．Reduce the amount of nitrogen.
B．Increase the release of oxygen.
C．Reduce nitrous oxide emissions.
D．Stop industrial activities.