Some educators that children should be rewarded for their great performance.
| A．assumed | B．adopted | C．advocated | D．convinced |
It seems that living green is __________ easy and affordable. A small step makes a big difference.
| A．exactly | B．fortunately | C．surprisingly | D．hardly |
It was in the small house _____was built with stones by his father ____he spent his childhood.
| A．which; that | B．that; where | C．which; which | D．that; which |
__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
| A．Even if | B．If only | C．While | D．Once |
I like this jacket better than that one, but it costs almost three times______.
| A．as much | B．as many | C．so much | D．so many |
Only when I left my parents for Italy __________how much I loved them.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |