Is that your baseball 改为复数句

Is that your baseball 改为复数句 ls that your baseball?变为复数句 Is that your friend (改为复数句) That is his baseball.改为复数句 My tennis ball is (under the bed) Is that his baseball?改为同义句 That is a bag.改为复数句 The baseball is on the sofa改为否定句 Are the Is that your dictionary?(改为复数句)______ ___yuor_ Is that your brother?怎么改为复数句 Is that your friend?(改为复数句） Is that your family photo?改为同义句 This is her uncie.改为复数句 Alic is that your photo改为复数句 are these her borthers 改为单数句 Lucy's baseball,your baseball,that is not,it is ,连词成句