Eric the Red was forced to leave because he had committed a murder, ____ he got into trouble.
| A．for which | B．where | C．to which | D．why |
School children must be taught how to deal with dangerous ________.
| A．states | B．conditions | C．situations | D．positions |
The survey shows that ______ of the population in the country ______ adults.
| A．three fifths; is | B．three fifths; are |
| C．three fifth; are | D．three fifth; is |
The workers do nothing but _______ tea and talk to each other.
| A．drinking | B．to drink | C．drink | D．are drinking |
Every year, a great many visitors come to visit the temple ______ the 12th century, ______ has brought a large income.
| A．dating from; which | B．dated from; which |
| C．which dates from; that | D．which dated from; which |
She makes _______ effort to learn maths and she has made _______ great progress in it.
| A．an ; a | B．/ ; a | C．the ; / | D．an ; / |