The Greens must have been to 2010 Shangh
题型:选择题
问题:
The Greens must have been to 2010 Shanghai Expo, _____ they?[ ]
A. hadn't
B. didn't
C. can't
D. weren't
The Greens must have been to 2010 Shanghai Expo, _____ they?[ ]
A. hadn't
B. didn't
C. can't
D. weren't