1 Which subject does Miss Chen teach in a middle school (划线是：Chinese)
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Where does Miss Chen teach Chinese (划线是； in a middle school ）
2 What is Li Lei
3 How much did the book cost you ( 注意时态,原句的COST 是过去时哦）
4 How often does he write to his friend
5 How do we write words
加油!不明白再问!