_____more and more students show little interest in her class makes her puzzled.
| A．How | B．Why | C．What | D．Whether |
Luckily, we’d brought a road map without ______ we would have lost our way.
| A．it | B．that | C．this | D．which |
In the office I never seem to have time until after 5:30 pm, _____ many people have gone home.
| A．that | B．which | C．whose time | D．by which time |
All of the flowers now raised here have developed from those _______ in the forest.
| A．once they grew | B．they grew once | C．they once grew | D．once grew |
Every evening after dinner, if not ________ from work, I will spend some time walking my dog. (2009湖南卷)
| A．being tired | B．tiring | C．tired | D．to be tired |
________ by the advances in technology, many farmers have set up wind farms on their land. (2009天津卷)
| A．Being encouraged | B．Encouraging | C．Encouraged | D．Having encouraged |