问题
选择题
—Where’s Jeff?
—I'm not sure. He __________ be playing football on the playground.[ ]
A. need
B. might
C. must
D. can
答案
答案:B
—Where’s Jeff?
—I'm not sure. He __________ be playing football on the playground.[ ]
A. need
B. might
C. must
D. can
答案:B