单项选择题

______ way is more efficient is still a question.

A．What
B．Which
C．That
D．Whether
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单项选择题
In spring and summer, the most popular ______ is tennis.
A．work
B．activity
C．games
D．sport
单项选择题
Many a school in the United States ______ to train men in theology.
A．was set up
B．were set up
C．has set up
D．have set up
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