Great changes ________ in China since the People’s Republic of China _________ in 1949.
#36363
A
have taken place; was founded
B
has taken place; was founded
C
have been taken place; founded
D
took place; founded
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--Have you finished your work yet? --Yes, I have . It ____________ half an hour ago. 
#40189
A
has been finished
B
finished
C
was finished
D
has finished
Amy loves to talk about travel, she ____ many places of interest.
#40164
A
has gone to
B
has been to
C
has gone for
D
has been from
  By the time I was nine ,I ______hundreds of English words.
#38204
A
had learned
B
have learned
C
has been learned
D
had been learned