用括号中所给单词的适当形式填空(PS:见下面)
1、Theyaretryingtheirbest___(help)thepoorstudents2、Thelittlegirlisgoodat___(paint)flowers3、Mr.Greenspentthreehours___(repair)thecar4、Iusedto___(write)pomeswhenIwasaschoolboy5、YangZhenningisaveryfamous___(sciense)inChina6、Micharlmadehissister___(cry)bythrowinghertoyaway7、Themenuoutsidethedoorhaslotsofgood___(dish)8、They___(recent)begantowalkafterdinnereveryevening9、Thetwoboysarepiaying___(happy)inthegarden10、Nowmobilephonesareverypopularandtheyaremuch___(cheap)thanbefore11、Whois__(good)atEnglish,Lisa,MikeorAnn12、The____(many)friendsyouhave,the___(happy)youwillbe12、Thestorybookisthe___(interesting)onethatI'veeverread(PS:急要!)