问题

Food safety is important. Rules ______ to stop people from food pollution.
A:must make
B:must be made
C:can’t make
D:can’t be made;
B:must be made
C:can’t make
D:can’t be made;
正确答案是:
同类题型
WhentheNewYearcomes,childrenoften______andgetsomegifts. [ ]
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Nothing else_______more important than water in the place like a desert.