1. When do the children go to the playground?
2. Where do the children go after school?
3. Who goes to the playground after school?
4. After school the children go to the playground, don't they?
5. Do the children go to the playground or to the park?
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1. Where did he get his course certificate ?
2. How did he get his course certificate ?
3. Who got the course certificate framed and hung it on the wall?
4. He got his course certificate framed and hung it on the wall, didn't he?
5. Did he get his course certificate framed and hung it on the wall or hidden on bookshelf?