Beijing and Zhangjiakou       applying to host the 2022 Winter Olympic Games in 2013.
#52127
A
begin
B
began
C
have begun
D
had begun
推荐题目
The teacher asked Ben ____________ a difficult question in class.
#55172
A
answer
B
answering
C
to answer
D
answered
He          listen to pop music, but now he          dancing
#61624
A
is used to, used to
B
used to, is used to
C
used to, is used for
D
used, used for
When you don’t know a word, you can _________ in the dictionary. 
#60295
A
look it up
B
set it up
C
give it up
D
pick it up