There __________great changes in our hometown in the past fifteen years.
#37191
A
has been
B
have been
C
was
D
were
推荐题目
While the alien _______ a souvenir, the girl called the police.
#42248
A
was buying
B
bought
C
buys
D
is buying
 We _____ more than 1,600 words since we began to learn English.
#36222
A
learn
B
have learned
C
learned
D
are learning
 —Where is Jack? —He _________ basketball on the playground. 
#38025
A
plays
B
is playing
C
is going to play
D
play