单项选择题

Projectors were fixed in the classrooms so that teachers______an opportunity to demonstrate the experiment clearly to the students.

A. ought to have
B. must have
C. may have
D. should have
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单项选择题
I don't think it's the right______to disturb him when he is so upset at the terrible news.
A. chance
B. moment
C. situation
D. occasion
单项选择题
It was______the old couple had expected.
A. more a miracle than
B. a miracle as much as
C. a miracle more than
D. as much of a miracle as
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