－How many students watched the teacher carefully enough ?
－_________.
Nobody B. None C. Someone D. Some one
The synonym of the word “need” is ______.
| A．influence | B．require | C．realize | D．wish |
I think the music is great, it is worth ______.
| A．to listen | B．to listen to | C．listening | D．listening to |
I didn’t go to bed ______ I finished all the homework last night．
| A．when | B．after | C．while | D．until |
Simon always feels sure about his own ability, he is so ______
| A．energetic | B．outgoing | C．imaginative | D．confident |
The lights in the classroom are on, but ______ is in it．
| A．someone | B．anyone | C．no one | D．every one |