открыть скобки 1)whales (adapt) to extreme weather conditions if we (not stop) climatic changes
2) when the temperature (drop) water (turn) into ice
3) we (visit) main places of antarctica if we (use) ski-doos and sledges
4) when we arrive to the airport yesterday there (be) a thick fog and the flight (delay)
5) we already (visit) 2 hot countries and 1 eastern country. we always (like) to travel. what we (do) now? we (pack) the luggage to go to a new country. we (pack) our luggage from 1h to 3h yesterday. what (be) the weather like tomorrow? i think it (go) to rain heavilly
6) she always (stay) at this research station but yesterday she (not/stay) there she (arrive) and (stay) at the newcomer`s place. she (be) here for 3 days already and ( not call) her parents yet. while she (travel) she (investigate) the climate last year