They suggested that the library open during the vacation.
A. was kept
B. would be kept
C. is kept
D. be kept
网友回答
A. was kept
B. would be kept
C. is kept
(答案→)D. be kept
解析：考查虚拟语气：当宾语是suggest，advise，order，propose等词的时候，宾语从句用虚拟语气：Sb （should） do，而且the library是被一直开放，句意是：他们建议图书馆在假期一直开放。选D。