---You see, there are a lot of cars and people on the street. ---Yes, it’s very______.

- When we are in danger, we need to stay_______.- Exactly. Only in this way can we come up with good ideas.

E-mail is much ______than long-distance calling.

 When you have western food, you should use knife and fork properly. The underlined part means“_____ ”.

----What’s your best friend like?               -----He_____.