---Did you listen to the lecture given by the famous herbalist doctor Zhang Wuben?
--- No, we ______ it. But we had a lot of traffic on our way.
| A．could have attended | B．must have attended |
| C．could attend | D．shouldn't have attended |
His house, for _______ he paid $10, 000, is now worth $50, 000.
| A．that | B．it | C．them | D．which |
.The buses, most of _______ were already full, were surrounded by an angry crowd.
| A．that | B．it | C．them | D．which |
It was not such a good dinner _______ she had promised us.
| A．like | B．that | C．which | D．as |
David is such a good boy _______ all the teachers like him.
| A．that | B．who | C．as | D．whom |
David is such a good boy _______ all the teachers like.
| A．that | B．who | C．as | D．whom |