37 My father has worked for the postoffice for 3 years. (我爸爸在邮局工作3年了）
38 When I speak to the class, I always feel nervous. 我对着全班讲话的时候，总是觉得紧张。
39 She has played the violin since 2009. 她从2009年起就拉小提琴了。
40 Tom's grandpa is staying ill. 汤姆的爷爷正卧病在床。追问
38 When I speak to the class, I always feel nervous. 我对着全班讲话的时候，总是觉得紧张。
39 She has played the violin since 2009. 她从2009年起就拉小提琴了。
40 Tom's grandpa is staying ill. 汤姆的爷爷正卧病在床。追问
请问，这两题怎么写呢？
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