While abroad, you’ll have to ask your host family for things you don’t know the English _____.
| A．of | B．for | C．with | D．to |
(2012年浙江卷，2)The development of industry has been ________ gradual process throughout ________human existence，from stone tools to modern technology.
| A．不填；the |
| B．the；a |
| C．a；不填 |
| D．a；a |
It is useful to be able to predict the extent _______which a price change will affect supply and demand.
| A．from |
| B．with |
| C．to |
| D．for |
In the dark street，there wasn't single person _______she could turn for help.
| A．that |
| B．who |
| C．from whom |
| D．to whom |
(2012年南京高三模考)
If something is “dog-eat-dog”，it is a situation ________people have to take care of themselves and look after their own interests.
| A．on which |
| B．in which |
| C．by which |
| D．for which |
By nine o'clock，all the Olympic torch bearers had reached the top of Mount Qomolangma，________appeared a rare rainbow soon.
| A．of which |
| B．on which |
| C．from which |
| D．above which |