To master a foreign language,______.
| A．a lot of practice is needed | B．it needs a lot of practice |
| C．practice is in need of | D．one needs a lot of practice |
Had they known what was coming next, they second thoughts.
| A．may have | B．could have |
| C．must have had | D．might have had |
John talked with me for about an hour yesterday．Never ________ him talk so much．
| A．did I hear | B．had I heard | C．I had heard | D．I heard |
________ deep down in the earth for thousands of years, the dead forest has rotted away and become coal．
| A．Having buried | B．Being buried |
| C．Buried | D．To be buried |
In my view, London's not as expensive in price as Tokyo but Tokyo is ______in traffic.
| A．the most organized | B．more organized |
| C．so organized as | D．as organized as |
Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
| A．setting | B．sets | C．set | D．to set |