He used to walk to school.中文是什么意思?

he used to walk to school同义句 Yu Mei used to walk to school He used to walk to school.(保持原意基本不变） He ______ _______ to sc He used to walk to school改成一般疑问句如何改? As close friends,they used to walk to school ____ they used to walk to school 同义句 I used to walk to school before.改一般疑问句 Tom used to walk to school.(改为同义句) Tom used to ----- ----- - 把"I used to walk to school"改为同义句 "I ofen ____ to school ____ They should walk to school carefully.是什么意思 Did you walk to school yesterday是什么意思 we walk to school together是什么意思