--Look! Someone ________ the floor.--Well, it wasn’t me. I went shopping just now. 
#100635
A
had swept
B
has swept
C
was sweeping
D
is sweeping
推荐题目
—Bob, you______ on the phone.   —______. 
#104322
A
areneeded;I'mcoming
B
arewanted;Coming
C
arecalled;I'llcome
D
arerungup;Thanks
It is the first time that Michel _______ the Summer Palace.
#99257
A
is visiting
B
visits
C
has visited
D
will visit