1. It's ..........to consume soft drinks and junk food every day.
A. health

B. healthy

C. healthily

D. unhealthy

2.The teacher often encourages his student's .........in voicing their opinions in his lessons

A. participatory

B. participation

C. participant
3.The guests, most of....are listening to my speech, are prestigious Scholars.
A.who

B. which

C. whose

D. whom

tìm lỗi sai

4. This non-profit organisation was found by a retired principal in 1994.

A. non-profit

B. was found

C by    

D. retired

5.It says that she is the most successful singer of her generation.

A. Says    B. is    C. most successful    D. her generatiom

mọi người giúp mình ạ, mình muốn biết chọn đáp án gì và quan trọng là tại sao ạ. mình cảm ơn.