đặt câu hỏi cho từ gạch chân . Lưu ý : Trong ngoặc là từ gạch chân
1 . She goes to the fitness center three times a week
⇒ How often does she go to the fitness center ?
2. They joined the enviroment projects last Sunday
⇒ When did they join the enviroment projects ?
3. People might watch fims on smart phone
⇒ What might people do on smart phone
4. Hi-tech robots might look after children
⇒ What might hi-tech robots might do