--How many times      he       abroad before?   --Never.
#39694
A
has ; been to
B
has ; been
C
has ; gone to
D
has ; gone
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In New York I found my friend Collins, who       there some time before me.
#40368
A
would arrive
B
has arrived
C
had arrived
D
was arriving
China ______ the WTO for more than 10 years, and it has brought great changes to it.
#41666
A
has joined
B
has been in
C
has become a member of
D
has joined in