The problem is too difficult for him. He _______ solve it by himself without any help.
#76048
A
can't
B
mustn't
C
shouldn't
D
needn't
推荐题目
— Mike, is this your eraser? — No, it’s not ______. Maybe it’s __________.
#75071
A
my; Lily’s
B
me; Lily
C
mine; Lilys’
D
mine; Lily’s
—Hey, Ted! You _______ never play in the street. It’s not safe.—Sorry, Mum. I won’t again.
#76866
A
need
B
must
C
can
D
may
The haze or smog was so serious that the winter running _________.Some students complained as they ran
#62272
A
could have cancelled
B
should have cancelled
C
must have been cancelled
D
ought to have been cancelled