Mr. Li asks the students in the river, because it’s too dangerous.
| A．swim | B．to swim | C．not to swim | D．to not swim |
I am sure that you’ll ______ the difficulty.
| A．get on | B．get up |
| C．get off | D．get over |
They have been skating______ 2 hours ago.
| A．for | B．until |
| C．since | D．after |
----Why don’t you go to the movie with me?-----Because I _______it already.
| A．saw | B．have seen |
| C．see | D．seen |
____ useful the computer is!
| A．What a | B．What an |
| C．How | D．How a |
Do you remember what ____ at 11:00a.m yesterday?
| A．were you doing | B．you were doing |
| C．are you doing | D．you are doing |