(2014年北京市西城区高三5月二模试题)30. — The professor gave a really good speech.  — I suggest you _____ him some specific questions about his work experience.
#86399
A
have asked
B
will ask
C
asked
D
ask
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It’s required that the students___ mobile phones in their school, so seldom ____ them using one.   
#87521
A
not use; will you see
B
should not use; you will see
C
don’t use; will you see
D
would not use; you will see
It is recommended by the representatives that traditional cultures _____
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A
should preserve
B
have been preserved
C
be preserved
D
must be preserved
He______the job well, but he______so careless.
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A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been