按要求改写下列句子。

为你解答。
1.My mother answered the phone.（改为否定句）
My mother didn't answer the phone.

2.I arrived home at eight o'clock yesterday evening.（就划线部分at eight o'clock提问）
What time did you arrive home yesterday evening?

3.He went to the theatre last night.（改为一般疑问句）
Did he go to the theatre last night?

4.Please write a letter to me again.（改为否定句）
Please don't write a letter to me again.

5.You must go to meet your friend tomorrow.（改为否定句）
You mustn't go to meet your friend tomorrow.