Jack ______ be in the library. He is playing football on the playground.
#54032
A
can’t
B
can
C
need
D
must not学科
推荐题目
 Mr. Wu found a number of magazines in the classroom ______________.
#56981
A
was lost
B
is missing
C
were missing
D
get lost
 Some boys of Class One enjoy _____ pop music.
#52020
A
listen to
B
listens to
C
listening to
D
listened to
It’s important __________. 
#63147
A
for us to learn English well
B
to us to learn English well
C
for us learning English well
D
of us to learn English well