单项选择题

John's score on the test is the highest in the class; he ______ last night.

A．must study
B．should have studied
C．must have studied
D．is sure to study
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单项选择题
The school committee hoped that their choice of play would be ______ with the students and their parents,
A．recognized
B．popular
C．favorable
D．fascinated
单项选择题
One of the most spectacular qualities of man is notably bis ______ to any kind of natural environment.
A．tendency
B．adoptability
C．adaptability
D．availability
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