—Don’t forget to close the door after school.
— ________.
| A．OK, I won’t | B．OK, I will. | C．Yes, I do. | D．No, I don’t. |
-Do you know_______ second-hand smoke?
-To protect our health and memory.
| A．how we should prevent | B．why should we prevent |
| C．why we should prevent | D．how should we prevent |
It's foggy today. I'm not sure _______ the highway will be closed soon.
| A．whether | B．when | C．how | D．why |
_______ the students_______ their teacher know about the four people.
| A．Both…and… | B．Not only…but also… |
| C．Neither-…nor… | D．Either…or… |
Super Brain is_______ an interesting TV program_______ many people like watching it.
| A．so; that | B．such; that | C．so; as | D．such; as |
My mother keeps all the things in my family in good order. She is_______.
| A．creative | B．curious | C．energetic | D．organized |