The reason ______ he didn’t come was ______ he was injured.
| A．that; because | B．why; that | C．why; because | D．that; that |
The place _____ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.
| A．to which; where | B．at which; where |
| C．by which; in which | D．for which; which |
It was an agreement, ______ could not be changed.
| A．of which details | B．whose the details |
| C．the details of which | D．all whose details. |
The shopkeeper did not want to sell for ______ he thought was not enough.
| A．what | B．which | C．where | D．how. |
Helen was much kinder to her youngest child than she was to the others, _____, of course, made the others unhappy.
| A．which | B．that | C．what | D．who |
The reason why he was late was _______ he had take a wrong bus.
| A．because | B．whether | C．when | D．that |