Saving and recycling are long-term projects _______ determination matters a great deal.
| A．that | B．which | C．whose | D．where |
The reason ______ he gave for being late was _______ he forgot to set the alarm clock.
| A．which; because | B．why; because |
| C．which; that | D．that; because |
It was because he was ill ______ we decided to return home.
| A．why | B．that | C．when | D．where |
Laws are what keep society ______ and the nation at peace.
| A．in order | B．in need | C．in fact | D．in existence |
_______ greatly by what he had heard and seen, he made up his mind to stand on his own feet again.
| A．Inspiring | B．To be inspired | C．Being inspired | D．Inspired |
It is a surprise for me to see that these old-fashioned machines are still ________ in the big city.
| A．in order | B．in use | C．in danger | D．in difficulty |