Question

— Food problem is becoming a big one in China!
—I think the food ________ before going to shops or supermarkets.

A．is checked

B．is checking

C．should be checked

D．should check

Answer 1

C

试题分析：句意：——在中食品问题正在成为一个大问题！——我认为视频在进入商店或超市之前应该进行检查。结合句意，此处是表示建议，因此用情态动词should,主语the food 与动词 check之间是被动关系，故选C。