It was the training he had as a young man made him such a good engineer.
| A．what; that | B．which; that | C．that; which | D．that; what |
Was it because he was ill ____ he asked for leave?
| A．and | B．that | C．that’s | D．so |
It was on October 1st ____ new China was founded.
| A．which | B．when | C．as | D．that |
It was in the rice fields ____ we had our league meeting.
| A．where | B．that | C．in which | D．on which |
It was through Xiao Li ____ I got to know Xiao Wang.
| A．who | B．whom | C．how | D．that |
He was unable to make such progress, ____.
| A．hard as he tried | B．as hard he tried |
| C．hard he has tried | D．tried hard as he |