who is the letter from

who is the letter from who is the letter from? Who is the letter to? The letter is from England. the letter is from my penfriend in Britain对划线部分提问 用who is th who is this letter from?who 什么成分? 填空who is the letter ( it‘s from lucy to her pen friend who is the letter form?什么意思 Who is the football from? What letter is missing from the wall Whom is the letter from?什么意思? the letter is from my sister,( )is working in Beijing