1.When the flight (announce), they (sit) in the departure lounge for half an hour.
2.If travelling by air (be) less dangerous, it (choose) by more people.
Раскройте скобки поставив глаголы в нужную грамматическую форму
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When the flight was announced, they were sitting in the departure lounge for half an hour.
If travelling by air was less dangerous, it would be chosen by more people