|time flies||time passes rapidly||What? It’s already 11 pm? How time flies!|
|to take off||to leave||This party is boring. I think I’m going to take off.|
|to take off||to start being successful||When they started to focus on customer service, their business really took off.|
|flight of fancy||a silly or fanciful idea||
He suggested that we install a swimming pool at work – what a flight of fancy!
|to be a high flyer||to be very successful||Titus is working at the Council of Europe now. He’s always been a high flyer.|
|head in the clouds||to be constantly distracted/not paying attention||I feel like you never listen to what I’m saying. You’ve always got your head in the clouds.|
|nosedive||a sudden failure/downswing||The US economy took a nosedive in 2007, causing a global recession.|