_isknowntotheworld,MarkTwainwasagreatAmericanwriter.
A、AsMany careers require a college degree; some jobs, ________, only require previous experience.
Theclockhasstopped.I________getitgoagainandsetthealarm,orIwillbelateagaintomorrow.
Theukuleleisa________instrument,whichresemblesaguitar.
Don’taskhimhowoldheis.He’sreally____aboutit.
Iftheirmarketingteamsucceeds,they__theirprofitsby20percent.