把下列句子改成一般疑问句 [题目见下] .把下列句子改成一般疑问句1.We are playing chess.2.He is a doctor.3.My mother is writing a letter.4.I am 170cm tall.5.They are my good friends.

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把下列句子改成一般疑问句 [题目见下] .把下列句子改成一般疑问句1.We are playing chess.2.He is a doctor.3.My mother is writing a letter.4.I am 170cm tall.5.They are my good friends.
把下列句子改成一般疑问句 [题目见下] .
把下列句子改成一般疑问句
1.We are playing chess.
2.He is a doctor.
3.My mother is writing a letter.
4.I am 170cm tall.
5.They are my good friends.

把下列句子改成一般疑问句 [题目见下] .把下列句子改成一般疑问句1.We are playing chess.2.He is a doctor.3.My mother is writing a letter.4.I am 170cm tall.5.They are my good friends.
1 Were you playing chess?
2 Is he a doctor?
3 Is your mother writing a letter?
4 Are you 170cm tall?
5 Are they your good friends?