—Could you go to the beach with us this
题型:选择题
问题:
—Could you go to the beach with us this weekend?
—I'm sorry I can't. I ______ study for the history test.[ ]
A. can
B. could
C. may
D. have to
—Could you go to the beach with us this weekend?
—I'm sorry I can't. I ______ study for the history test.[ ]
A. can
B. could
C. may
D. have to