________ ARE YOU DOING

50. - LOP 4 UNIT 7 LY THUYET BAI TAP DAP AN 50. - LOP 4 UNIT 7 LY THUYET BAI TAP DAP AN
LOP 4 UNIT 7 LY THUYET BAI TAP DAP AN
50. ________ are you doing? a. when b. how c. where d. what KEY PART II. PRACTICE ( THỰC HÀNH) Complete each sentence.