_______ is known to us all that the old scientist, for _______ life was hard in the past, still works hard in his eighties.
| A．It; whom | B．As; whose | C．As; whom | D．It; whose |
.
The country life he was used to _________ greatly since 1992.
| A．change | B．has changed | C．changing | D．have changed |
.
I’ve found that many people are still in _____ habit of writing silly things in _____ public places.
| A．the; the | B．/; / | C．the; / | D．/; the |
.
I think I had at least a billion test, __ one in which they cut out a piece of muscle from my leg.
A. including B, include C. includes D. included
.
He wanted to know what I thought, _____ confused me because I thought the author knew
more than I did.
| A．when | B．that | C．which | D．where |
.
She fell off a ladder and ______Tony was in the next room, he managed to catch her in time.
| A．because | B．even though | C．in case | D．unless |