Chọn đáp án đúng và giải thích

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7. This letter is ……
A. in
B. with
C. by
D. on

8. He and his friends usually get ……… and talk about their stamps.
A. together
B. themselves
C. each other
D. one another

9. There aren’t any good movies ……… at the moment.
A. going on
B. being on
C. performing
D. showing

10. Vietnamese people have had the ……… of helping one other since the early days of the country.
A. custom
B. legend
C. tradition
D. religion