These are our skateboard是(就划线提问)

These are our skateboard是(就划线提问) These are their skateboard.(对划线部分提问,their被划线) These two boys are Linda's brothers.就划线部分提问,划线部分是These two b These are photo.划线部分提问.划线部分是:photo these cases are their firends,就划线部分提问,划线部分为their friends 就划线部分提问：These are tigers.tigers被划线了! these skateboards are nice,these划线 划线提问 these shose are hers(her划线提问) these pants are blue.划线提问 These are his pens (对划线部分提问）划线部分是his pens These are Lily's pens 对划线部分提问（划线部分是Lily's） these presents are different form Kitty's 对划线部分提问(划线的是Kitty'