These days.the relationship between teacher and pupil is not what it be. A．used
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These days，the relationship between teacher and pupil is not what it________be.
A．used to B．would
C．should D．could
试题答案
A
考查情态动词。used to(用于过去经常发生的事)曾经。句意为：如今，师生关系已不是以前那样了。