You see the lightning _____ it happens, but you hear the thunder later.
| A．for an instant | B．on the instant | C．in a instant | D．the instant |
The key point is not who said the words, _____ they are true or not.
| A．but whether | B．and whether | C．but why | D．and how |
I’m sorry, ____ I won’t be able to come tonight.
| A．for | B．and | C．but | D．or |
I’m afraid we can’t have coffee; there’s _____ left.
| A．nothing | B．none | C．no one | D．no any |
Mr Ascot, headmaster of the school, refused to accept ______of the three suggestions made by the Students’ Union.
| A．either | B．neither | C．any | D．none |
If you can dream _____ , you can do _____.
| A．one; it | B．it; one | C．one; one | D．it; it |