—Guess what; Yang Yang failed in the maths test .—How         it be?She is second to none in maths.
#63086
A
shall
B
might
C
can
D
must
推荐题目
— Oh, my cat is really fat.— You __ have given her so much food.
#63412
A
wouldn't
B
mustn't
C
couldn't
D
shouldn't
---May we leave the classroom now?---No, you      . You       to leave until the bell rings.
#75743
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed