问题
选择题
— Where are the students? How could they keep us waiting for so long?
— They started an hour ago and they________ be here in fifteen minutes, I think. [ ]
A. can
B. would
C. should
D. must
答案
C
— Where are the students? How could they keep us waiting for so long?
— They started an hour ago and they________ be here in fifteen minutes, I think. [ ]
A. can
B. would
C. should
D. must
C