The police the murderer everywhere when he suddenly appeared in a theatre.
| A．is searching for | B．were searching for |
| C．are searching for | D．were searching |
Did you see Xiao Li at the party? No, ___ by the time I arrived.
| A．she had left | B．she has left | C．she was left | D．she must left |
When do you think we will leave tomorrow? You had better __ ready at seven o’clock.
| A．to be | B．be | C．being | D．been |
___ he said was quite surprising.
| A．That | B．What | C．Why | D．How |
___ entered the classroom when the bell rang.
| A．We hardly had | B．Hardly had we | C．Hardly we had | D．Had we hardly |
We visited a factory __ makes toys for children.
| A．where | B．which | C．in which | D．at which |