一、把下列名词变复数.
1、tennis( tennises )2、subject( subjects )3、library( librarys )4、piano( pianos )
5、thife( thives )6、Chinese( Chinese )7、wife( wives )8、Japanese( Japanese )
9、fax( faxes )10、American(American )
二、把下列动词变成单三形式.
1.meet( meets )2.answer( answer )3.call( calls )4.love（.loves ）
5.see( sees )6.take(takes )7.bring(brings )8.sell( sells )
9.open( opens )10.walk( walks )11.sing( sings )12.teach( teaches )
13.play( plays )14.dnace(dnaces )