根据句意填入单词的正确形式：

　　1.Mybrotheristwoyears_older__(old)thanme.

　　2.Tomisas__fat_(fat)asJim.

　　3.Isyoursister___younger____(young)thanyou?Yes,sheis.

　　4.Whois____thinner_______(thin),youorHelen?Helenis.

　　5.Whosepencil-boxis___bigger_______(big),yoursorhers?Hersis.

　　6.Mary’shairisas___long_______(long)asLucy’s.

　　7.Ben___jumps___(jump)__higher______(high)thansomeoftheboysinhisclass.

　　8.___Does_____Nancysing____better______(well)thanHelen?Yes,she_is____.

　　9.Fangfangisnotas___tall______(tall)astheothergirls.

　　10.Myeyesare__bigger________(big)than_her_______(she)..

　　11.Whichis____heavier_______(heavy),theelephantorthepig?

　　12.Whogetsup___earlier______(early),TimorTom?

　　13._Does____thegirlsgetup__earlier_____(early)thantheboys?No,they__aren't____.

　　14.Jimruns_slow____(slow).ButBenruns_slower____(slow).

　　15.Thechilddoesn’t__write____(write)as_fast___(fast)asthestudents.