选一个单词词性,在造句.

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v.n.n.vadj.n.======以下答案可供参考======
供参考答案1:
2.change: v. eg. The rich land changed into deserts because we cut down too many trees.
3.wheel: n. eg. A car has four wheels.
4. difficulty: n. eg. He has difficulty in working out the problem.
5. repair: v. eg. My uncle repaired my bike yesterday.
6. deaf: adj. eg. Working in the noisy condition may cause people to be deaf.
7. letter: n. eg. I am writing a letter to my penfriend.