---Great changes        in our hometown since ten years ago.
#40580
A
have happen
B
have taken place
C
happened
D
have been taken place
推荐题目
 —Where’s Li Hua?—Look! He ____ tennis on the playground.
#40036
A
plays
B
played
C
playing
D
is playing
While he_____ on the phone, a man walked into his room.
#39822
A
was talking
B
talked
C
is talking
D
talk
The Reads __________ lunch when I got to their house. 
#36346
A
was having
B
were having
C
are having
D
is having
—Where is Mike?  —He’s _______ the pool.
#40102
A
swim at
B
is swimming at
C
swimming at
D
swim