Teaching is a difficult job ______ requires great skill and patience．
| A．which | B．where |
| C．who | D．why |
According to the lastest study ,the population of Xuzhou has grown to more than 30 times____it was in 1949. The figure ____to 9.5 million by the end of 2010.
| A．that , will rise | B．that ,will have risen | C．what , will rise | D．what ,will have risen |
. In September 2008 , China’s key milestone in space travel_____when Zhai Zhigang conducted the first space walk.
| A．reached | B．was reached | C．has reached | D．had been reached |
—What do you think of Harry Potter and the Philosopher’s Stone ?
--Fantastic. Steven Kleves_____each character in the movie impressive through lively dialogues and fascinating plots.
| A．makes | B．would make | C．had made | D．made |
I got caught in the rain and my suit _____.
| A．has ruined | B．had ruined | C．has been ruined | D．had been ruined. |
–Has your father returned from American yet ?
--Yes, but he ____here for only 3 days before his company sent him to Australia.
| A．was | B．has been | C．will be | D．would be |