请帮忙给出正确答案和分析,谢谢!
He asked me to marry him but I refused.(英译中)
I had no reply to my letter.(英译中)
He offered his seat to me.(英译中)
He does odd jobs for me from time to time.(英译中)
He spares no pains to study English.(英译中)
He comes to visit me frequently.(英译中)