Knowledge is the food of thought ________,as long as it is put in our brain,we will grow wiser.
I really regret _______ to the party with you last night.
Asimov began having his stories ______ in science magazines in 1939.
It was ______ Asimov was eleven years old ______ his talent for writing became obvious.
—Sorry, I made a mistake again. —______. Practice more and you’ll succeed.
I’d like to ______ you _______ your success on the experiment.