题目内容:
Listen up, guys!Everyone ________ wear a mask. Go and buy one if you don’t have one.
A.can’t
B.can
C.mustn’t
D.must
参考答案:
答案解析:
Listen up, guys!Everyone ________ wear a mask. Go and buy one if you don’t have one.
A.can’t
B.can
C.mustn’t
D.must