11.It will take us another five years______the construction of all the 121 roads is completed.
| A．when | B．since | C．before | D．After |
— What’s up?
— There are so many problems ______.
| A．remained to be solved | B．remaining to solve |
| C．remained solving | D．remaining to be solved |
Microblog is a platform ________ people can express their thoughts and communicate with each other by sending posts.
| A．which | B．where | C．what | D．when |
From the next term, parents ______ e-mails instead of letters, to be informed of their children’sexam results.
| A．are sending | B．will send | C．will be sent | D．are sent |
— I have got a backache.
— That’s not surprising. You ______ in front of that computer too long.
| A．work | B．worked | C．have been working | D．are working |
—Have you got used to the Chinese food, Robert?
—Yes, but I don't like ____ when a Chinese host keeps serving me the food I don't like.
| A．this | B．that | C．those | D．it |