第三人称复数改为一般疑问句并做肯定回答Sarah and Mike like playing the violin?

第三人称复数改为一般疑问句并做肯定回答Sarah and Mike like playing the violin? 改为一般疑问句并做肯定回答 改为一般疑问句并做肯定回答 These are pencils.改为一般疑问句并做肯定回答 改为一般疑问句,并做肯定和否定回答. 改为一般疑问句 并做否定和肯定回答 I am OK 改为一般疑问句并做肯定回答 That,s his watch.改为一般疑问句,并做肯定和否定的回答. she’s enjoying the music(改为一般疑问句,并做肯定回答) these are bob's keys.改为一般疑问句并做肯定回答） It's a desk.改为否定句,一般疑问句,并做肯定,否定回答 This is my sister.改为一般疑问句并做肯定回答 That's my brother改为否定句 改为一般疑问句,做肯定,否定回答 改为一般疑问句,做肯定否定回答 What are these?They are apples.(改为单数句子)That's a bus.(改为复数句子)These are pencils.( 改为一般疑问句并做肯定回答）可以讲一下么?怎么改的,谢谢了、、、 these aren't their brothers改为单数句 jack is my brother's good friend.改为一般疑问句,并做肯定回答is this your sister 改为复数句 these aren't their brothers改为单数句 jack is my brother's good friend.改为一般疑问句,并做肯定回答is this your sister 改为复数句 Are there any ducks?(做肯定回答) There´s a vase on the desk（改为复数句)I like this tigers mask(改一般疑问句,做肯定回答) I can sing song songs (改为一般疑问句)