Some of you may have finished unit one.
题型:选择题
问题:
Some of you may have finished unit one. _____, you can go on to unit two. [ ]
A. If you may
B. If you do
C. If not
D. If so
Some of you may have finished unit one. _____, you can go on to unit two. [ ]
A. If you may
B. If you do
C. If not
D. If so