V. Writing:* 1. Passive voice: ( 1. People make a flute of bamboo. (make => made => made: làm) S V O A flute is made of bamboo. S is/am/are V3/ed 2. Vietnamese people play Dan Nhi. Dan Nhi..………………………………………… 3. They clean the classroom before the new school year coming. The classroom……………………………………………… 4. People wear masks to avoid catching Covid 19 virus. Masks…………………………………………...................... 5. People play the violin with a bow.. The violin…………………………………………………… 6. The farmers often play the flute when they take a break. The flute……………………………………………………