He’s posted the letter, _________he?
—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.