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 |
--- Sam, can you tell me ______?
--- Try Music World on Huanghai Road.
| A．why to buy a CD | B．where to get a CD |
| C．how to choose a CD | D．when to record a CD |
Through their hard work, they _____ in climbing up to the top of the mountain..
| A．led | B．proved | C．succeeded | D．remained |
_____ you read it, you can’t imagine how moving the story is.
| A．If | B．Unless | C．While | D．Because |
--- _____ will you stay there for the show?
--- Until the day after tomorrow.
| A．How often | B．How soon | C．How far | D．How long |
--- Tom, your hair seems to be a little longer.
--- Mum, I’m busy these days. I’ll have it _____ this weekend.
| A．to cut | B．cut | C．cutting | D．cuts |