英语两道改错题

1.The writer's mother has died since he was seven years old.

2.I have't heard a letter from my penfriend for a few months.

求改错

1句把has改为had.2句把heard改为received.

1.died 改成been dead

2.a letter 去掉

1.since改成when

2.去掉a  letter

The writer's mother had died since he was seven years old.过去的过去用过去完成时

I have't heard from my penfriend for a few months.把 a letter 去掉，hear from sb 受到某人的来信

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