Do you know that China is one of _________countries in the world?
Yes, I do. It's much_________than the US. ( )
A.the oldest; olderB.old; older
C.older; older
﹣Mom,I will eat less fast food this year,believe me.
﹣If you make a ________,you must keep it.( )
A.jokeB.noiseC.mistakeD.promise
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