Read the text and answer question. According to the text, write (T) for the true statements and (F) for the false statements. ( ) In 1977 two planes collided in Tenerife. ( ) In 1977 almost 600 people were killed due to heavy fog on the runway. ( ) In 1977 two planes collided when they were heading for Gran Canary airport. ( ) In 1977 two planes were guided to Gran Canary airport because Tenerife was closed. Choose the alternative that corresponds to the order.