The duties of a policeman are _____ than ____ .
| A．dangerouser ; a teacher | B．more dangerous ; a teacher |
| C．greater danger ; those of a teacher | D．more dangerous ; those of a teacher |
The reason for _______ he failed in the exam was that he was too careless.
| A．which | B．why | C．that | D．it |
I saw a woman running towards me in the dark. Before I could recognize who she was, she had run back in the direction _______ she had come
A. of which B by whichC. in whichD. from which
Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ______ don’t.
| A．who, / | B．/ , who | C． who, who | D．/, / |
We are just trying to reach a point ______ both sides will sit down together and talk.
| A．where | B．that | C．when | D．which |
—Do you have anything to say for yourselves?
---Yes , there’s one point ____ we must insist on.
| A．why | B．where | C．how | D．/ |