The accident happened ________ a cold morning but luckily, no one was injured.
A.at B.on C.in
There are fifty students in this class, ________ of them are boys, so the number of the boys is 30.
A.three fifth B.three fifths C.three five
We should realize that everyone has his or her own merits (优点) and defects (缺点) , so we must treat them ________.
A.properly B.actually C.exactly
Sam didn't jump so ________ as Jim in yesterday's sports meeting.
A.high B.higher C.highly
Sandy really likes eating meat, but she doesn't like eating________.
A.breads B.vegetables C.chickens
As we know, schools and families play ________ important role in teaching students about the value of working hard.
A.the B.a C.an
