Life is like riding a bicycle.To keep your ,you must keep moving.( )
A.promiseB.positionC.balanceD.ability
What should we pay attention to ________mistakes during the exams?
Some details.( )
avoiding making
avoid to make
to avoid making
The accident happened ________ a cold morning but luckily, no one was injured.( )
at
on
in
There are fifty students in this class, ________ of them are boys,so the number of the boys is 30.( )
three fifth
three fifths
three five
We should realize that everyone has his or her own merits (优点) and defects (缺点) , so we must treat them ________.( )
properly
actually
exactly
Sam didn't jump so ________ as Jim in yesterday's sports meeting.( )
high
higher
highly