________ around the Water Cube, we were then taken to see the Bird's Nest for the 2008 Olympic Games.
—I left my handbag on the train, but luckily someone gave it to a railway official.—How unbelievable to get it back! I mean, someone ________it.
They ________have arrived at lunchtime but their flight was delayed.
—Happy birthday!—Thank you! It's the best present I________ for.
We ________ have bought so much food now that Suzie won't be with us for dinner.
—Why are your eyes so red? You ________ have slept well last night.—Yeah, I stayed up late writing a report.