A campus emergency ______ occur at any time of the day or night weekend or holiday

继续教育 专四考试 已帮助 人

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

A、have to

B、dared

C、may

热搜:关于氨基酸代谢错误的论述是_________。