Nobody knows ______ yesterday.
| A．how the accident happens |
| B．how does the accident happen |
| C．how the accident happened |
| D．how did the accident happen |
Unluckily, Kobe says goodbye to NBA 2013-2014 season.
| A．leaves | B．leaves for | C．enters | D．comes back |
The man stopped smoking because of lung cancer.
| A．gave away | B．gave out | C．gave in | D．gave up |
We have found no debris（残骸）ofthe missing Malaysian airlines flight in the waters
| A．lost | B．gone | C．losing | D．passed |
It’s sometimes too difficult to understand the voices of American film.
| A．heavy | B．hard | C．confusing | D．confident |
--- Let’s go to the car exhibition this Sunday.
---______!
| A．That ’s OK | B．That’s all right | C．All right | D．That’s right |