问题
选择题
Some of you may have finished Unit One.________，you can go on to Unit Two.
A．If you may
B．If you do
C．If not
D．If so
答案
答案：D
省略句的用法。If so＝If you have done that/so.
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Some of you may have finished Unit One.________，you can go on to Unit Two.
A．If you may
B．If you do
C．If not
D．If so
答案：D
省略句的用法。If so＝If you have done that/so.