----Look at the boy running on the playground. Is it David? ---- It ______ be him. I saw him go to the teachers’ office just now.
#53899
A
mustn’t
B
can’t
C
may not
D
needn’t
推荐题目
 My grandfather     us stories when I was young.
#57603
A
was used to tell
B
used to telling
C
used to tell
D
use to tell
He wants to be a doctor when he ________. 
#59228
A
looks up
B
grows up
C
gets up
D
comes up
The woman said he _____ to use yellow to remind him _______ a warm sunny day.
#57416
A
prefered, to
B
preferred, of
C
would rather, from
D
would rather, of