There _______ a lot of trees here, but n
题型:选择题
问题:
There _______ a lot of trees here, but now it has become desert. [ ]
A. is
B. are
C. used to be
D. used to being
There _______ a lot of trees here, but now it has become desert. [ ]
A. is
B. are
C. used to be
D. used to being