We can save water by _________________ (not brush) our teeth under a running tap.
举一反三
- We brush our teeth every night as part of our .（老规矩，惯例）
- We need to<br/>brush our teeth ___ we sleep. () A: before B: after
- what should we do when we brush our teeth according to the conversation?
- We should brush our ______ every day. A: tooth B: teeth C: hand D: face
- We should brush our __________ twice a day. A: tooth B: teeth C: tooths D: teeths