问题
It remains ________ whether thestudents will benefit from the monthly exams.
A:prevented
B:Some couples also have an agreement before getting married
C:It can be a birth certificate or an ID card
D:to have seen
B:Some couples also have an agreement before getting married
C:It can be a birth certificate or an ID card
D:to have seen
正确答案是：
同类题型
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