American students take part _____different activities at recess

Câu 11: American students take part ______ different activities at recess.
a. on
b. at
c. of
d. in
Câu 12: Eating and talking with friends are the _______ ways of relaxing at recess.
a. more common
b. most common
c. best common
d. much more common
Câu 13: When do you play sports? - ________
a. I play sports after school
b. I play sports with friends
c. I play sports at school
d. I play sports once a week
Câu 14: The sign mean
a. Clean your hands
b. Wash your hands with liquid soap
c. Do not use liquid soap
d. Don't wash your hand
Câu 15: What does the sign want us to do?
a. You must be kind and helpful
b. You must be quiet here
c. You can talk loudly
d. You mustn't keep silent