— We can use QQ to talk with each other on the Internet.
— Really? Will you please show me __________ it.
| A．what to use | B．how to use |
| C．when to use | D．where to use |
Many families have their own cars. __________， it causes the terrible air problem.
| A．Because | B．If | C．However | D．For |
— Hello! Remember me?
— I seem to have met you __________.
| A．before | B．ago | C．since | D．some time |
— Do your parents live with you?
— They __________ to do. But they _________ to living in the countryside now.
| A．were used; get used | B．got used; are used |
| C．used; get used | D．used; used |
— Lily dances so well. Who teaches her?
— She learns all by herself. She never goes to any training classes.
| A．usually | B．often | C．even | D．never |