Mary is the only one of the students in our class who ____ to the Great Wall so far.
#103115
A
is
B
has been
C
are
D
had been
推荐题目
 --- Alice came back home the day before yesterday. --- Really? Where ______?
#104270
A
has she been
B
had she been
C
has she gone
D
had she gone
—What’s the noise outside? —The kids ______ in the garden.
#100329
A
have played games
B
play games
C
are playing games
D
are played games
Don’t ______ life’s small joys while searching for the big ones. 
#100855
A
contradict
B
overlook
C
obtain
D
confirm