1.it was expensive.(改成一般疑问句)2.They were at home yesterday(改成一般疑问句)3.You are cooking.(改成一般疑问句)

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1.it was expensive.(改成一般疑问句)2.They were at home yesterday(改成一般疑问句)
3.You are cooking.(改成一般疑问句)

Was it expensive?
Were they at home yesterday?
Are you cooking?
 
 

are  you  cooking?你在烹饪么?

1.Was it expensive?
2.Were they at home yesterday?
3.Are you cooking?
望采纳,一定正确的。祝你学习愉快!