—Nancy, are you sure you can do it by yourself? — .I did it before.
| A．Take care | B．Don’t worry |
| C．I’m not sure | D．Not exactly |
The city of Rome has just passed a new law to prevent cruelty to animals，which many people say can___the civilization of a city．
| A．manage | B．separate | C．handle | D．measure |
The experiment is______failure．But do remember that，in the face of failure，you should still keep up good state of mind．
| A．/；the；the | B．a；/；the | C．the；/；the | D．a；/；a |
---Don’t press the button , John.
---What if I ______?
| A．did | B．would | C．will | D．shall |
As a mother, I seldom give my children so difficult a job _____they can’t do actively.
| A．that | B．as | C．which | D．what |
---Jackson was late for Mr. Black’s literature class this morning.
---_____? As far as I know, he never came late to class.
| A．So what | B．Why not | C．How come | D．What for |