问题
选择题
—Why is Tom absent?
—He must be sick,__________?
A.isn’t he
B.must he
C.is he
D.mustn’t he
答案
A
此处是对现在的情况进行推测,附加疑问句要用isn’t he?
—Why is Tom absent?
—He must be sick,__________?
A.isn’t he
B.must he
C.is he
D.mustn’t he
A
此处是对现在的情况进行推测,附加疑问句要用isn’t he?