If anything the machine, please let us know.
| A．happens on | B．happens to | C．happened on | D．will happen to |
I wasn’t told _____.So I called you for help.
| A．when start |
| B．when to start |
| C．to how start |
| D．how start |
The old man felt quite lonely _____ such a cold night.
| A．in |
| B．on |
| C．at |
| D．for |
In those days, few people liked dancing,_____?
| A．didn’t they |
| B．did they |
| C．don’t they |
| D．were they |
-- Is the Nanjing Bridge open to the public yet?
---Yes. It ____ for almost one and a half months .
| A．has opened |
| B．has being opened |
| C．has been open |
| D．was open |
Jim gave up _____ Chinese. He thought it was too hard.
| A．learn |
| B．learning |
| C．to learn |
| D．learned |