5、;thefourth中havea‘crowd’,andIwroteitto‘crowed’。theyareallwrong,makemelostsix分。 Thesecond,Iamcannot想通。Model:Thefifthsubject’sthelast中,havea“abike”。Theansweris“wasriding”,andIwrote“wasbying”。Ithinkitisright,butit’swrong,Iamnot想通,whycannotuse“byingabike”?(老师注明: Because