_______ we are doing has never been done before.
| A．That | B．What |
| C．Which | D．Whether |
He is __________ careless a student that he often __________ some letters while writing.
| A．such ；leaves on |
| B．so ； leaves on |
| C．so ； leaves out |
| D．such ； leaves out |
How did you get into __________？
| A．such a mess |
| B．a such mess |
| C．so much a mess |
| D．so a mess |
His plan was such a good one __________ we all agreed to accept it.
| A．so |
| B．and |
| C．that |
| D．which |
It’s impossible for __________ few people to finish __________ a lot of work in only two days.
| A．such；such |
| B．so；such |
| C．such；so |
| D．so;so |
Simon made a big bamboo box __________ the little sick bird till it could fly.
| A．keep |
| B．kept |
| C．keeping |
| D．to keep |