Taking High School Entrance Examination one month later than usual will be _____unforgettable event for us． （ ）
| A． |
a |
B． |
an |
C． |
the |
Alice，please turn down the music，I ________ an important phone now．（ ）
A．answerB．answered
C．have answeredD．am answering
This math problem isn't so difficult that I can work it out ________．（ ）
A．easilyB．usefullyC．loudlyD．quietly
Don't ________ the chance when you can catch it，or you will regret．（ ）
A．guessB．missC．rememberD．allow
Are you clear about the job of a policeman，Ben？
Yes，to keep people ________ and the society in good order．（ ）
A．busyB．safeC．luckyD．healthy
The earlier kids learn to be independent，the ________ it is for their future．（ ）
A．goodB．wellC．betterD．best