Some aspects of a pilot's job be boring, and pilots often work at inconvenient hours．
#63217
A
can ; have to
B
may ; can
C
have to; may
D
ought to; must
推荐题目
Many students are about football． They play a game whenever possible．
#63680
A
crazy; will
B
crazy; are going to
C
fond; will
D
fond; are going to
— Catherine, I have cleaned the room for you . — Thanks. You_______. I could manage it myself.
#63169
A
needn’t do
B
needn’t have done
C
mustn’t do
D
shouldn’t have done
–Who is the tallest boy?–It ______ be John. Because John is of medium height..
#75231
A
must
B
needn’t
C
might
D
can’t
If you _____the book, you ____ buy it right now, I think.
#78151
A
needn’t, needn’t
B
don’t need, don’t need
C
don’t need, needn’t
D
don’t need, needn’t to
It’s annoying ! After I gave her my advice, my daughter ________ go and do the opposite.
#62598
A
have to
B
must
C
shall
D
would