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
——It is said that another new car factory_____now. —— Yeah.It _____one and a half years. 
#104658
A
is building; takes
B
is being built; will take
C
is built; will take
D
is being built; takes
—— What were you up to when your parents came in? —— I_____for a while and_____some reading. 
#104638
A
was playing; was going to do
B
played; did
C
had played; was going to do
D
had played; did