3 Do the quiz. Mark the sentences T (true) or F (false). 6 QUIZ 7 1 Kayaking is a water sport. 2 Manaus is the city where two rivers join to become the Amazon River. 3 The Caspian Sea borders three countries. 4 Australians have cockroach races on 25th December. 5 Brisbane is in Kazakhstan. 6 The Caspian Sea has salty water.​