—How do people do bird-watching?
—Sometimes they______the birds quietly, sometimes they use telescopes.
| A．catch | B．cast | C． approach | D． Shoot |
When deeply absorbed in work，________he often was，he would forget all about eating or sleeping. (2012·北京，26)
| A．that | B．which |
| C．where | D．when |
Care of the soul is a gradual process ________ even the small details of life should be considered. (2012·湖南，34)
| A．what | B．in what |
| C．which | D．in which |
It is the third time that she has won the race，________ has surprised us all.(2012·陕西，14)
| A．that | B．where |
| C．which | D．what |
I wish to thank Professor Smith，without________help I would never have got this far.
(2012·天津，7)
| A．who | B．whose | C．whom | D．which |
The air quality in the city，________ is shown in the report，has improved over the past two months. (2012·福建，23)
| A．that | B．it |
| C．as | D．what |