is known to us all is that the old scientist, for life was hard in the past, still works very hard in his eighties．
| A．As; whom | B．What; whom |
| C．It; whose | D．As; whose |
I walked slowly through the market, where peopleall kinds of fruits and vegetables.
I studied the prices carefully and bought what I needed.
| A． | sell | B． | were selling | C． | had sold | D． | have sold |
Tim is in good shape physicallyhe doesn't get much exercise.
| A． | if | B． | even though | C． | unless | D． | as long as |
Cindy shut the door heavily and burst into tears. No one in the office knew__________she was so angry.
| A．where | B．whether | C．that | D．why |
I'm tired out. Iall afternoon and I don't seem to have finished anything.
| A． | shopped | B． | have shopped |
| C． | had shopped | D． | have been shopping |
. So far nobody has claimed the money__________in the library.
| A．discovered | B．to be discovered |
| C．discovering | D．having discovered |