The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
— You don’t forget when we borrowed that reference book, do you?— I can’t remember now but ________ sometime last week?
Mr. Johnson complained to his doctor that he lacked energy, so his doctor advised him to ________running.
— What about ______supper that we had in that restaurant last week? — Well, ____ most worst one indeed.
She looks forward every spring to __ the flower-lined garden.
I would love ___ to the party last night but I had to work extra hours to finish a report.