–Whose is this purple scarf?
–It _______ be Mary’s. She always wears a purple scarf like this.
| A．must | B．can | C．mustn’t | D．can't |
– What do you know about _______?
-- Line drawings that show how something works.
| A．pictures | B．diagrams |
| C．programmes | D．paintings |
Try to give its meaning when you meet a new word. Don’t _____ your dictionary all the time.
| A．work on | B．take on |
| C．keep on | D．depend on |
It’s common ______ that the Japanese eat Sushi.
| A．information | B．knowledge |
| C．direction | D．instruction |
The main unit _________ all the computer’s electronics.
| A．contains | B．shows |
| C．uses | D．helps |
You _______ ever saw computers years ago, but now they are everywhere.
| A．sometimes | B．usually |
| C．hardly | D．almost |