She knows so much about England. She____
题型:选择题
问题:
She knows so much about England. She _____ there before.[ ]
A. must be
B. must live
C. must have been
D. must have lived in
She knows so much about England. She _____ there before.[ ]
A. must be
B. must live
C. must have been
D. must have lived in