You ______ do something. You don’t do it often.
A. never B. always C. seldom
—We can use QQ to talk with each other on the Internet.
—Really? But can you tell me _______it.
| A．how I can use | B．how can I use |
| C．why can I use | D．when I can use |
We had _______ 8-day holiday during this National holidays, but some of us felt unhappy because of _________heavy traffic on the highways.
| A．an, the | B．a, the | C．a, a | D．an, a |
When I got there, the train _____________.
| A．has left | B．left |
| C．had left | D．have left |
The newly designed iPhone 5 on the market____________ well now. Get one before it __________out in the shop.
| A．sells, is sold | B．sells, sells |
| C．is sold, is sold | D．is sold, sells |
---_________ useful dictionary it is!’
--- ‘I think so.’
| A．how | B．what | C．what a | D．what an |