By next summer John _____in this factory for thirteen years.
#100820
A
has been working
B
will have been working
C
will be working
D
has worked
推荐题目
Thank you for helping me. I       the final exam without your timely help. 
#102591
A
have failed
B
will fail
C
would have failed
D
must have failed
The old city wall ______ in the Ming Dynasty.
#103432
A
was been built
B
has been built
C
was built
D
had been built
“Mom_______ the supermarket,” the daughter said to her father.
#101779
A
has gone to
B
has been to
C
goes to
D
go to