This is our headmaster.改为一般疑问句
This is our headmaster.改为一般疑问句
"That is our classroom"改为一般疑问句
This is a clock.(改为一般疑问句)
this skirt is colourful改为一般疑问句
This is a boy.改为一般疑问句
This is a computer.(改为一般疑问句)
This is my ruler.(改为一般疑问句)
This is my uncle (改为一般疑问句)
This is a ruler 改为一般疑问句
this book is boring[改为一般疑问句}
This is a ruler改为一般疑问句
This is a desk.(改为一般疑问句)