----- Have you ever visited the 2010 Shanghai World Expo? -----Yes.When I was in China , I ______ it twice.
#103152
A
have visited
B
visited
C
had visited
D
would visit
推荐题目
Life abroad was not easy for him, and it was several years before he ________ the whole community.
#102091
A
had been familiar with
B
got familiar with
C
have been familiar with
D
would be familiar with
We are told that more new teaching buildings ________ next year. 
#101533
A
build
B
was built
C
has built
D
will be built