单项填空（共20题，每小题1.5分，共30分）
“We can’t go out in this weather,” said Bob, ____ out of the window.
| A．looking | B．to look | C．looked | D．having looked |
Nothing__________ after the terrible fire which had been caused by someone smoking in bed.
| A．left | B．was remained | C．remained | D．continued |
___________ with the size of the whole earth, the highest mountain doesn't seem high at all.
| A．When compared | B．To compare |
| C．While comparing | D．It compared |
—____________ you_________ the editor at the airport?
—No, he__________ away before my arrival.
| A．Have... met; has driven | B．Had... met; was driven |
| C．Did... meet; had been driven | D．Have... met; had driven |
You____________ television. Why not do something more active?
| A．always watch | B．are always watching |
| C．have always watched | D．have always been watching |
This photo of mine was taken__________ stood the famous high tower.
| A．which | B．in which | C．where | D．there |