Jim         a skilled worker for almost six years. He is an experienced manager now.
#100435
A
has been
B
had been
C
is
D
was
推荐题目
--- If he ____, he _____ that food. --- Luckily, he was sent to hospital immediately.
#103455
A
was warned; would not eaten
B
had been warned; would not have eaten
C
would be warned; had not eaten
D
would have been warned; had not eaten
—Hi, Jack.You look a bit fat now. —Yes, I ______ five pounds recently.
#99315
A
am putting on
B
will put on
C
have put on
D
had put on
It's the third time ________ late for school this week. 
#101545
A
that you are
B
you are
C
when you arrived
D
that you have been
—You look tired.  —Yes. I _____ non-stop until twelve o’clock.   
#103911
A
hasn’t been working
B
wasn’t working
C
was working
D
didn’t work