Whether dying patients      be helped to end their lives is a tough moral question.
#62244
A
must
B
should
C
might
D
would
推荐题目
That man ________ be Mary’s father, as he is much taller.
#76683
A
can
B
must
C
can’t
D
mustn’t
You ______ be hungry already--- you had lunch only two hours ago!
#63140
A
mustn’t
B
wouldn’t
C
can’t
D
needn’t
It’s quite warm here; we __________turn the heating on yet.
#63494
A
couldn’t
B
mustn’t
C
needn’t
D
wouldn’t