hoangkha
Member
- Joined
- Oct 4, 2011
- Member Type
- Student or Learner
- Native Language
- Vietnamese
- Home Country
- Vietnam
- Current Location
- Vietnam
Hi!
- Jasmine is working as a dental assitant. What she does is.................. people's teeth.
[FONT=MathJax_Math]A[FONT=MathJax_Main].[/FONT][/FONT] clean [FONT=MathJax_Math]B[FONT=MathJax_Main].[/FONT][/FONT] cleans [FONT=MathJax_Math]C[FONT=MathJax_Main].[/FONT][/FONT] cleaning [FONT=MathJax_Math]D[FONT=MathJax_Main].[/FONT][/FONT] to clean
The key is A, but I am wondering why D is wrong, please?
- Jasmine is working as a dental assitant. What she does is.................. people's teeth.
[FONT=MathJax_Math]A[FONT=MathJax_Main].[/FONT][/FONT] clean [FONT=MathJax_Math]B[FONT=MathJax_Main].[/FONT][/FONT] cleans [FONT=MathJax_Math]C[FONT=MathJax_Main].[/FONT][/FONT] cleaning [FONT=MathJax_Math]D[FONT=MathJax_Main].[/FONT][/FONT] to clean
The key is A, but I am wondering why D is wrong, please?