6. ---- Someone might see us.
-----___________? We are not doing anything illegal.
A. What’s up B. What if C. How come D. So what
7. The young teacher always has a lot of methods to make her lessons lively and interesting, _______ all her students.
A. agreeing to B. turning to C. seeing to D appealing to
8. Only in this way will you get your valuable ideas __________ ; or your time will be wasted.
A. over B. across C. away D. down
9. Dogs have a very good ___________ of smell and are often used to search for survivors in an earthquake.
A. sense B. view C. means D. idea
10. He didn’t make __________ clear when and where the meeting would be held.
A. this B. that C. it D. these