Many experts stick to the view teacher development is the key to quality education lies.
| A．which; where | B．which; in which |
| C．that; where | D．that; in which |
He was busy writing a story, only once in a while to smoke a cigarette.
| A．to stop | B．stopping | C．to have stopped | D．having stopped |
The wet weather will continue tomorrow, when a cold front to arrive.
| A．is expected | B．is expecting | C．expects | D．will be expected |
Distinguished guests and friends, welcome to our school. the ceremony of the 50th Anniversary this morning are our alumni（校友） from home and abroad.
| A．Attend | B．To attend | C．Attending | D．Having attended |
My parents in Hong Kong. They were born there and have never lived anywhere else.
| A．live | B．lived | C．were living | D．will live |
I like getting up very early in summer. The morning air is so good .
| A．to be breathed | B．to breathe | C．breathing | D．being breathed |