Rewrite the following sentences.按要求改写句子。
1. Sheep like to eat grass. (划线部分提问)
What ________ sheep ________ to eat?
2. His friend’s name’s Jimmy. (划线部分提问)
________ his ________ name?
3. Peter,draw on the blackboard. (改为否定句)
Peter, ________ ________ on the blackboard.
4. There are some old sheep on the farm. (改为单数句)
There ________ ________ old sheep on the farm.