It's________ far_______ walk home from here. Let's take a bus.
| A．so; that | B．too; to |
| C．enough; to | D．such; that |
They really don’t know how _________ the difficult problem.
| A．to solve | B．solve |
| C．solves | D．solved |
They used to be friends, ______?
| A．don’t they | B．didn’t they |
| C．do they | D．did they |
It has been many years ________ we met at the train station in 2008.
| A．when | B．after |
| C．before | D．since |
--How can young people realize their dreams?
--No matter what difficulties they meet, they can’t ________.
| A．give them up | B．give up them |
| C．give it up | D．give up it |