Beijing ______a lot in the past ten years. Now it has become one of the biggest modern______ in the world. 
#38493
A
changes, cities
B
changed, city
C
changed, cities
D
has changed, cities
推荐题目
Amy ____ the school library. She ______ books three times a week.
#41801
A
has gone to; has used to borrow
B
has been to; used to borrow
C
has gone to; has been used to borrowing
D
has been to; is used to borrowing
he girl sitting next to me on the plane was very nervous, for she            before.
#36660
A
hasn’t flown
B
hadn’t flown
C
didn’t fly
D
wasn’t flying