We must be home________ 6 o'clock.A.by B.in C.on
选出不同类的一项。A.boat B.bank C.ship
选出不同类的一项。A.east B.there C.south
选出不同类的一项。A.bookstore B.bus C.train
选出不同类的单词。A.classroom B.music room C.washroom
选出不同类的一项。A.library B.canteen C.desk