________ the danger of drunk driving, many drivers promised never to drive after drinking.
| A．Realizing | B．To have realized |
| C．Realized | D．Having realized |
----I heard Tom was badly injured in the accident.
----______. Let’s go and see him.
| A．If so. | B．If not. | C．If any. | D．If ever. |
— Would you get me a bar of chocolate from the kitchen, dear?
—______one?
| A．Other | B．Every | C．Another | D．More |
I’d like to start my own business –that’s ________ I’d do if I had the money.
| A．why | B．when | C．which | D．What |
I failed again in the examination and only then _____ how much time I had wasted.
| A．I realized | B．I had realized | C．did I realize | D．had I realized |
-----Where did you find your wallet?
-----It was in the park _______ we went for a walk yesterday.
| A．where | B．that | C．how | D．Which |