1.We are having a history class.（改为一般疑问句） _____ _____ having a history class?
2.How‘s the weather in Toronto?（改为同义句）
______ the weather _______ in Toronto?
3.Helen is （watching TV ）now.（对括号部分提问）
______ _______Helen _______ now?
4.Jim is playing basketball （at school）.（对括号部分提问）
_______ _______ Jim playing basketball?