He is cleaning his ____.
A: teeth
B: tooth
C: tooths
A: teeth
B: tooth
C: tooths
举一反三
- An elephant has long _ A: Tooth B: Teeth C: Tooths D: Teethes
- We should brush our __________ twice a day. A: tooth B: teeth C: tooths D: teeths
- Dr.Smith is going to pull out one of my _________. A: teeth B: tooth C: teeths D: tooths
- The girl often brush her( )before she goes to bed. A: tooth B: tooths C: teeth D: teeths
- You need to brush your after . A: tooth, eat B: teeth, eating C: tooth, eating D: teeth, eat