What we used to think_____ impossible now does seem possible.[ ]A. isB. was C. has beenD. will be-高一
A. is B. was C. has been D. will be
题目简介
What we used to think_____ impossible now does seem possible.[ ]A. isB. was C. has beenD. will be-高一
题目详情
A. is
B. was
C. has been
D. will be
答案