.You’ll never guess who I met today—my old teacher! We_____for twenty years.
#99994
A
don’t meet
B
haven’t met
C
hadn’t met
D
couldn’t meet
推荐题目
---Hi, Tracy, you looked tired.---I am tired. I______the living room all day. 
#101772
A
painted
B
had painted
C
having been painting
D
have painted
By the time you get to the airport, I ______ for you at the gate.
#100025
A
will have waited
B
will have been waiting
C
will be waiting
D
am waiting
--- Are we about to have dinner?  --- Yes, it _______ in the dining room. 
#102786
A
is serving
B
serves
C
is being served
D
served