A. Have you done/have finished

B. Did you do/have finished

C. Did you do/finished

D. Have you done/finished

Số MOL feo =0,3. Số MOL khí =0,01 . Ta có n=0,3:0,1=3 .nên X là NO

A.PHONETIC

I.Choose the word that has the underlined part pronounced differently from the others.

A. childhood     

B. character    

C. lunch     

D. chicken soup