Personally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students. 
#62557
A
can; have to
B
may; can
C
has to; may
D
ought to; must
推荐题目
Harry is feeling uncomfortable.He________too much at the party last night.
#62301
A
could drink
B
should drink
C
would have drunk
D
must have drunk
I ______ the poor rabbit, but I didn’t have the right drugs with me at that moment.
#63401
A
saved
B
had saved
C
could save
D
could have saved
—Must I hand in my homework now, Mr.Smith?—No,you ________.
#74206
A
can’t
B
shouldn’t
C
wouldn’t
D
needn’t