These boxes are ours氦为单数形式

These boxes are ours.(氦为单数形式) These boxes are ours氦为单数形式 These ducks are ours.(对ours提问) 改错：These are ours books These tomatoes are ours.(对ours提问） These are boxes. (改为单数句） These are pencils-boxes哪里错了? what are there in these boxes? -Are these coats_____ -Yes,they're ours. these shoes are ours.单数句 These books are ours.(同义句） These books are ours.(改为一般疑问 these,books,are,and,those,boxes,are 连词成句 Whose pencils are these?They are (our/ours)pencils.They are(our/ours). Whose teachers are these They are ours改成单数形式 who's lunch box are these? They are ours.改错 Are these her pencil boxes?(改为同义句) Are_______pencli boxes_________? These boxes are brown.变单数求了快