________ the prices and functions of different types of computers before you make up your mind which to buy.
He did not regret saying what he did but felt that he________it differently.
—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.