—— Where’s Jack?
—— I think he’s still in＿＿＿bed, but he might just be in＿＿＿bathroom．
| A．／；／ | B．the； the | C．the；／ | D．／； the |
When about one of the biggest problems today, many experts say that an energy crisis is approaching and is thus threatening mankind's survival．
| A．asked | B．being asked | C．having asked | D．asking |
—Hey, did you enjoy the vacation in London?
—No．Our vacation was totally ruined; not only was the food terrible but the weather was awful .
| A．in the meanwhile | B．as well |
| C．as a matter of fact | D．in addition |
Without the contributions of Qian Xuesen, the father of Chinese missile, the achievements in space technology unthinkable in China．
| A．would be | B．would have been |
| C．might be | D．should have been |
With the price of pork and eggs quickly, CPI has become a hot phrase among Chinese．
| A．climbing | B．climbed | C．to climb | D．climb |
In 18-minute address to students across America on September 8, 2009, President Obama told American students to make most of their education．
| A．an; the | B．an; a | C．the; the | D．the; a |