OTBET:11 These walls of water can reach
up to 100 feet high and cause widespread. destruction when they reach shore. 2 Earthquakes on the sea floor are the usual
cause of tsunamis.
3 Around 80 percent of tsunamis happen in the so-called "Ring of Fire" in the Pacific Ocean.
4 This is a volcanically active area were tectonic plate shifts and earthquakes are common. Underwater landslides and volcanic eruptions can also start tsunamis.
5 People's best defense against tsunamis is early warnings that allow people to evacuate areas near the ocean.
4 Complete the exchanges using the present perfect or the past simple
1 A: I(bought) Fiona a birthday present yesterday.
B: Really? I (have not got) her anything yet.
2 A: (Have you/ever/visited) the Taj Mahal?
B: Yes, I (went) there in 2010.
3 A: I took part in a Mexican festival last summer.
B. You're so lucky! I (have never/been) to Mexico.
4 A: Max (has just/graduated) from university.
B: That's great! He (studied) really hard for his exams last month.
5 A: Laura (has already chosen) her costume for the parade.
B: I know. She (showed) it to me last night - it's beautiful.