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Question 11. This summer Lan_______ three volunteer activities.

A.  has participated in              B. participates in              

C. participated in                     D. participating in

Question 12. Before moving to Ha Noi, my parents____ in Hai Phong.

A. have lived            B. lived                   C. have been living         D. live

Question 13. My friend has decided to use______electricity by using more solar energy instead.

A. more                   B. less                     C. much                          D. fewer

Question 14. A: This weekend I'm going to the SOS village to teach the children there.

B:  I____you.

A. join                 B. am joining           C. will join            D. have joined

Question 15. You'll become healthier if you consume_________soft drinks.

A. more              B. less                      C. much               D. fewer

 giúp.-. cám ơn ạ