—I don’t know ___________or not.
—Neither do I. You may ask his teacher.
| A．whether he is at school | B．he is at school |
| C．that he is at school | D．when he is at school |
I don't think the girl has a real gift_______ dancing, but she practises so hard and wants to be a dancer when she grows up. I admire her_______ her courage.
| A．of; for | B．for; of | C．for; for | D．of; of |
-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 |