Are those ---trousers?No,---are not ---.---are blue.(they)

are trouser,whose,these?连词成句 What are those?________(those)are books. If these trouser are too short,buy a bigger( )1 one2 pair3 ones选出选项,并说明选择的理由 My trousers are too old .I want to buy a new__A piece B pair C trouser D trousers说明为什么, What are those?答语 those are shoe改错 what什么are those Are those books (your) Whose are those books? whose pants are those? Those are pencils hers? Are those erasers? Are those ______ books are those your maps? Those are beautiful pictures. are those your lambs? 用those are.造句 What colour are those