15. My grandmother has got a new computer and now she spends her day visiting social ____.
A. networks
B. sites
C. networking sites
D. clubs
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16. I don't go to the ______ very often as it has become very expensive.
A. park
B. shopping mall
C. computer shop
D. cinema
17. My friends love to ______ with his friends and talk. They are not very active people.
A. shop
B. often
C. hang out
D. dance
18. Football is purely a ______ sport for millions of people all around the world.
A. spectator
B. audience
C. viewer
D. watcher
19. My mother and I went on a ________ to Thailand to see my brother who is studying there.
A. journey
B. travel
C. way
D. trip