---Oh, you have a headache and a cough. _______have you been like this?
---Three days.
| A．How long | B．How soon |
| C．How often | D．How many |
As young adults, it is our ____________to help the disabled.
| A．work | B．job | C．duty | D．task |
The girl asked the teacher _______________.
| A．what does the museum look like | B．what the museum looked like |
| C．what the museum will be like | D．what did the museum look like |
I won't come back _________August 5 and 7, so you’ll have to go there alone.
| A．until | B．both | C．between | D．for |
---What did you look for me for, Mary?
--- The boss wondered where you ___________ and how long you __________ there.
| A．had been, had been | B．had gone, had gone |
| C．had been, had gone | D．had gone, had been |
The newly-designed iPhone 4S 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 |