A
1. Listen to the teacher carefully or you can’t understand the lesson.
   If you................
2. Nam said: “Let’s go to school by bikes or buses to save money and energy. ” 
   Nam suggested ................
3. My sister failed her exam because of her laziness.
   Since my sister..................
B
4. Remember/ turn/ the lights/ before/ leaving. 
5.Don’t/ forget/ get/ plumber/ repair/ the faucet/ the kitchen.