People
need to brush ( )to prevent tooth decay.
A: daily
B: day
C: dayly
need to brush ( )to prevent tooth decay.
A: daily
B: day
C: dayly
A
举一反三
- People need to brush ( <br/>) to prevent tooth decay. A: daily B: day C: dayly
- People need to brush<br/>( ) to prevent<br/>tooth decay. A: daily B: day C: dayly
- You need to brush your after . A: tooth, eat B: teeth, eating C: tooth, eating D: teeth, eat
- Questions 17—20 are based on the following passage. According to Mr. Tait, what should we do to improve the situation of tooth decay A: Spend more money in fighting tooth decay. B: Have better education. C: Improve people’s standard of living. D: Get rid of some of our teeth.
- How many times do you brush your ________ every day？(tooth)
内容
- 0
中国大学MOOC: C_______is a hole in a tooth, caused by decay.
- 1
We need to<br/>brush our teeth ___ we sleep. () A: before B: after
- 2
Who are the stakeholders of an intelligent tooth brush? ( ) A: kids B: parents C: dentists D: sellers
- 3
We should brush our ______ every day. A: tooth B: teeth C: hand D: face
- 4
We should brush our __________ twice a day. A: tooth B: teeth C: tooths D: teeths