A single pipeline ___________ all the houses with water.
| A．is served | B．serves | C．are serving | D．serve |
Scientists have many theories about how the universe ___ into being.
| A．came | B．was coming | C．had come | D．would come |
Scientists have many theories about how the universe ___ into being.
| A．came | B．was coming | C．had come | D．would come |
You may use the room as you like ___ you clean it up afterwards.
| A．so far as | B．so long as | C．in case | D．even if |
John plays basketball well, ___his favorite sport is badminton.
| A．so | B．or | C．yet | D．for |
Mr.Smith was_________ to be a doctor but he became a teacher when he grew up.
| A．demanded | B．supposed |
| C．suggested | D．agreed\ |