The air is deadly polluted because some factories don't __________ the rules to protect the environment.
| A．appreciate | B．regard |
| C．honor | D．respect |
Ted came for the weekend wearing only some shorts and a T-shirt, ______ is a stupid thing to do in such weather.
| A．this |
| B．that |
| C．what |
| D．which |
The prize will go to the writer ______ story shows the most imagination.
| A．that |
| B．which |
| C．whose |
| D．what |
A lot of language learning,______ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
| A．as |
| B．it |
| C．which |
| D．this |
That evening, _____ I will tell you more about later, I ended up working very late.
| A．that |
| B．which |
| C．what |
| D．when |
He is trying to shelter his boss ______ criticism.
| A．from |
| B．off |
| C．to |
| D．out |