题目内容
Keep quiet! You ________ talk loudly in the library and you ________ obey the rules.
A.mustn't; should B.needn't; can't C.should; may D.must; can't
练习册系列答案
相关题目
题目内容
Keep quiet! You ________ talk loudly in the library and you ________ obey the rules.
A.mustn't; should B.needn't; can't C.should; may D.must; can't