---Mom, what did your doctor say?
---He advised me to live _____the air is fresher.
| A．in where | B．in which | C．the place where | D．where |
123. At present nanotechnology(纳米技术), a kind of tip science_________to the common people. Few people know him.
| A．unknowing | B．unknown | C．known | D．Untrue |
122. The children are very fat butbecause they appear ill-nutritious(营养不良)。
| A．unhealth | B．unhealthy | C．healthy | D．Health |
121. I was uncertain of my success. Which of the following can replace the underlined word?
| A．willing | B．not sure | C．certainly | D．not certainly |
120. Though he, sword wounds on his face, looks , Mike is a kind-hearted general.
| A．ugly | B．unusual | C．unfit | D．Fat |
119. This room is ____ than that one.
| A．tinyer | B．more tiny | C．tinier | D．Tinnier |