UNIT 1 TO UNIT 3I. HÃY CHỌN MỘT TỪ CÓ PHẦN GẠCH DƯỚI ĐƯỢC PHÁT ÂM KHÁC...

18. “Do they teach music?”, he said.

A. He said they teach music. B. He said they taught music.

C. He asked if they teach music. D. He asked if they taught music.