—The window is dirty.
—I know. It________for weeks.
| A．hasn't cleaned |
| B．didn't clean |
| C．wasn't cleaned |
| D．hasn't been cleaned |
For breakfast he only drinks juice from fresh fruit ___ on his own farm.
| A．grown | B．being grown | C．to be grown | D．to grow |
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 |