In manufacturing, cheaper materials are constantly being for the better, more expensive kind.
| A．maintained | B．cancelled | C．substituted | D．deposited |
She heard a terrible noise, __________ brought her heart into her mouth.
| A．it | B．which | C．this | D．that |
. They are given a lot of books ___________ are all young women.
| A．whom | B．whose writers | C．who | D．writers of which |
The Tower of London is _________ the Church tower.
| A．higher twice than | B．two times as higher than |
| C．twice high as | D．three times the height of |
. It’s not considerate (体贴人的) ________ you to take __________ of the little boy.
| A．for; advantage | B．of; advantage | C．for; use | D．of; use |
Reading newspapers is a good way to _________ current events.
| A．keep away from | B．take notice of | C．keep track of | D．make notes of |