--Must I clean the classroom now, Miss Wang?--No, you needn’t . It                by Bill. 
#41980
A
is cleaning
B
should be clean
C
was cleaned
D
has been cleaned
推荐题目
Some students in Shanghai     e-bags for several months.  
#42251
A
have
B
have had
C
had
D
will have
I __________ the CDs to you if I have time tomorrow.
#39710
A
will return
B
returned
C
have returned
D
return
The boy ________have ________ brothers ________ sisters.
#37203
A
don’t, any, and
B
doesn’t, any, or
C
don’t, some, or
D
doesn’t, any, and