8 revision VOCABULARY
When one plays it, he e__________ the c___________ and r__________ t___________
encourages compatition, removes tension
It's t________________ to travel on a long distance to strange d_____________ and c_________ i_________ places. It takes a lot of months.
Time-consuming, destinations, completely intact
When a new vaccine is d_____________, the science d_________ v_________
Developed, demands victims