Most of the roads were covered with thick snow, ____ made our journey more difficult．
| A．one | B．it | C．which | D．that |
Mother ______ him not to smoke, but he wouldn’t listen.
| A．persuaded | B．suggested | C．advised | D．hoped |
______ more and more trees cut down, many animals and insects are dying out.
| A．Because | B．With | C．As | D．Since |
Could it be in the place ______ we visited yesterday ______ you left your book?
| A．that; which | B．in which; where | C．where; that | D．that; that |
Although the number of competitors ___ limited, a number of our classmates ___ eager to take part in it.
| A．are; are | B．are; is | C．is; are | D．is; is |
We don’t need to do ___ extra work this evening. The day’s work was almost at ____ end now.
| A．/ ; an | B．an; an | C．the; the | D．the; / |