Put the verbs into the correct tenses. 1. This is the first time I (experience) . such a terrifying flood. 2. By the time I (arrive) . in Changi airport, he . (be) there for 30 minutes to pick me up. 3. If I (have) one million US dollars, I (build) . more parks in our city. 4. If I had more time in my business trip to Australia, I (pay) . a visit to the Opera House. 5. Before I moved to Florida, I (spend) . three days visiting Texas. 6. By the time the earthquake (stop) ., tens of big building in this small area (destroy) . 7. The next train to Bristol (start) . at 8.45 a.m, so I must go now. 8. More educational campaigns to raise peoples awareness of pollution (hold) .. by the government from the next month. 9. In recent decades, peoples health (threat) . by many diseases caused by pollution. 10. I (hear) . the news about one devastating typhoon in America the day before yesterday.