问题
选择题
—What's your uncle's opinion about your decision?
—He always encourages me to do ________ I think I should.
A．what
B．when
C．how
D．that
答案
答案：A
A 考察主语从句，should后面省略了do，do的后面缺少宾语，故使用双重作用的what。
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