问题

Who sang________in the competition,Tom,Kate or Bob—I think Bob did.I almost slept at that time.
A:am
B:is
C:are
D:be;
B:is
C:are
D:be;
正确答案是:
同类题型
Usually an adult man can grow about 1.7 meters tall, _____ a few may grow as short as 1.3 meters
I heard that we must have _________ teaching building __________ .
If you don’t make up your mind to get rid of your bad habits,you won’t be able to_________your goal.