They did not stop fighting_____ there was no enemy left.
| A．until | B．after | C．when | D．since |
When I was a little boy, l often dreamed a spaceman .
| A．to become |
| B．about become |
| C．of becoming |
| D．becoming |
I got caught in the rain and my suit .
| A．has ruined |
| B．had ruined |
| C．has been ruined |
| D．had been ruined |
We first met on a train in 2010. We both felt immediately that We each other for years.
| A．knew |
| B．have known |
| C．had known |
| D．know |
They _on the programme for almost one week before I joined them, and now we on it as no good results have come out so far.
| A．had been working; are still working |
| B．had worked; were still working |
| C．have worked; were still working |
| D．have worked; are still working |
When the old man to walk back to his house, the sun itself behind the mountain.
| A．started; had already hidden |
| B．had started; had already hidden |
| C．had started; was hiding |
| D．was starting; hid |