______ you’re putting off doesn’t go away; we had better solve the problem right now.
| A．Whatever | B．Whichever | C．Whenever | D．However |
The woman sold the eggs ________ seven dollars and they were sold ________ half price.
| A．with, at | B．for, at | C．at, in | D．by, on |
I’ve kept up a friendship with a girl whom I was at school ________ twenty years ago.
| A．till | B．with | C．about | D．since |
In the experiment we kept a watchful eye ________ the developments and recorded every detail.
| A．in | B．at | C．for | D．on |
Books are the most important records we keep ________ man’s thoughts, ideas and feelings.
| A．up | B．of | C．for | D．on |
I don’t think it’s fair to judge a person ________ their clothes.
| A．in | B．from | C．with | D．on |