1.are these books ours?用our改写 2.those are their footballs.用theirs改写3my shirt is new .用mine改写 4.your balloon is red.用yours改写 5.what time do your homework?用mary改写 6.there are some butterflies on the flower.改为单数句
问题描述：
1.are these books ours?用our改写 2.those are their footballs.用theirs改写
3my shirt is new .用mine改写 4.your balloon is red.用yours改写 5.what time do your homework?用mary改写 6.there are some butterflies on the flower.改为单数句
答
1.Are these books our books?
2. Those footballs are theirs.
3. Mine is new.
4. Yours is red.
5. What time does Mary do her homework?
6. There is a butterfly on the flower.
答
Are these our books?
Those footballs are theirs.
The new shirt is mine.
The red balloon is yours.
What time does Mary do her homework?
There is a butterfly on the flower.