We         arrive at six. But I’m sorry we are late. 
#63290
A
should
B
were supposed to
C
must
D
ought to
推荐题目
He _____ be at home, because the light is on.
#75911
A
must
B
can’t
C
can
D
might
You _________ get up so early. It’s weekend today.
#75626
A
mustn’t
B
can’t
C
needn’t
D
oughtn’t