This is not an economical way to get more water; ________, it is very expensive.
| A．in return | B．on the other hand | C．in a word | D．on the contrary |
Which do you enjoy ___ our weekend, fishing or watching TV?
| A．spending | B．to spend | C．being spent | D．spend |
Dr Brown has the habit of _____ the room when he is thinking about something troublesome.
| A．pacing | B．stepping | C．walking | D．marching |
There is a real possibility that these animals could be frightened, ____ a sudden loud noise.
| A．being there | B．there being | C．should there be | D．there was |
____ others might have been satisfied, Dawson had higher ambitions.
| A．What | B．Why | C．Which | D．Where |
Understanding the cultural habits of another nation, especially ___containing as many different subcultures as the united states, is very difficult.
| A．one | B．that | C．some | D．the one |