This is a desk.(改为一般疑问句)
This is a desk.(改为一般疑问句)
This is a desk.(一般疑问句)
This is a teacher's desk(改为一般疑问句,并作否定回答.)求教
there is a lamp on the desk 改为一般疑问句
This is a clock.(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 a ruler 改为一般疑问句
This is a ruler改为一般疑问句
This is a key改为一般疑问句?
This is a pen.改为一般疑问句
This is a map 改为一般疑问句