— Where do you think    he       the computer — Sorry , I have no idea.
#103251
A
has ; bought .
B
×; bought
C
did ; bought
D
had ;bought
推荐题目
—Why does the lake smell terrible?—Because large quantities of water_______________.
#99629
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
Mike didn’t notice Alice entering his room. He ____ a phone call.
#104835
A
answered
B
has answered
C
was answering
D
is answering
 All the homework     , the students went to see the movie Black Hawk Down.
#103331
A
had been done
B
having been done
C
had done
D
having done