– Why does she look so tired?-- She ________ all the morning and she still hasn’t finished it.
#104525
A
cleaned
B
was cleaning
C
has been cleaning
D
has cleaned
推荐题目
The story ______, and everybody knows about it. 
#102271
A
has been got round
B
got round
C
was got round
D
has got round
The student didn’t pay any attention to the lecture; he ________ of something else. 
#104749
A
thought
B
had thought
C
would think
D
was thinking