--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
While she       , she cut herself.
#38471
A
was cooking
B
cooked
C
had cooked
D
cooks
There    a sports meeting next weekend . 
#40561
A
will hold
B
will have
C
is going to be
D
is going to have .
You won’t have the chance to succeed when you ________.
#42061
A
gave up
B
give up
C
will give up
D
are giving up