I have some _________ in working out the problem.
– What do you know about _______?-- Line drawings that show how something works.
Try to give its meaning when you meet a new word. Don’t _____ your dictionary all the time.
It’s common ______ that the Japanese eat Sushi.
The main unit _________ all the computer’s electronics.
You _______ ever saw computers years ago, but now they are everywhere.