—Look! Someone ________ the floor.—Well, it wasn't me. I went shopping just now.
#63763
A
had swept
B
has swept
C
was sweeping
D
is sweeping
推荐题目
It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
#63767
A
had wiped out
B
have wiped out
C
have been wiped out
D
had been wiped out
Mary has __________ herself __________ for the party.
#63748
A
held; up
B
attended; to
C
done; up
D
turned; up
Up to now, our society ________ with limited living space and a shortage of natural resources.
#63760
A
has been challenged
B
is being challenged
C
is challenging
D
has challenged
I know little about the accident because not much ______ about it up to now.
#63758
A
has said
B
has been said
C
had said
D
had been said