---Don’t put the waste on the ground.                ---Oh, I’m very sorry. I ________ the dustbin there. 
#102280
A
don’t see
B
isn’t seeing
C
didn’t see
D
haven’t seen
推荐题目
The monkey was so lucky that it just missed ______ .
#103712
A
catching
B
to be caught
C
being caught
D
to catch
 I wish I ____ clever enough to work out the ____ geometry problem.
#102986
A
can be; abstract
B
could be; abstract
C
can be; easy
D
could be; easy
 She ___ volleyball regularly for many years when she was young.
#99986
A
was playing
B
played
C
has played
D
had played