1.Ba learn...... musical instrument such as the guitar ( play/ playing/ to play/ plays) 2.Students.........food and drinks at the school cafeteria at recess ( sell/ take /buy/ put) 3.Nam isn't very..... .He never play sports. ( sport/ sporty/sports/ sportily) 20.Ba enjoys........ to music in his free time. (listen/listening/to listen/to listening) 13.Thanks for....... me to your birthday party (invite/to invite/inviting/invites) CÁC CẬU CHỈ MÌNH MÂÝ PHẦN NÀY NHA CÂU 1-2-3-20-13-7-15 giup mình nhá...!!