. ------Don’t put the waste on the ground.                ------Oh, I’m very sorry. I ____ the dustbin there. 
#103748
A
don’t see
B
isn’t seeing
C
didn’t see
D
haven’t seen
推荐题目
John _______ for London this afternoon and his flight _______ off at 18:20.
#101809
A
is about to leave; will take
B
is leaving; takes
C
is going to leave; is taking
D
is to leave; is about to take
 In no time ________ smoke coming out of the house.
#101549
A
did we see
B
we saw
C
are we seeing
D
we see
This is the second time that you ______ the Summer Palace.
#100197
A
visited
B
have visited
C
had visited
D
are visiting