Not until I read your letter ________ the true state of the affairs.
| A．did I understand | B．had I understood |
| C．I understood | D．I had understood |
Most children in Great Britain are educated at the public_____.
| A．expense | B．charge |
| C．pay | D．credit |
Being a capable woman，Nancy _____ to be considered as merely a housewife.
| A．agrees | B．admits |
| C．refuses | D．rejects |
You have broken your promise；you______painting the house long ago．
| A．could have finished | B．had better finish |
| C．must have finished | D．should have finished |
Wow! Look at the man and his horse ________are running down the road.
A．which B．that C．who D where
A cool rain was falling_________with snow causing heavy traffic．
A．mixed B mixing C．to mix D．having mixed