__ has been mentioned above, continued chairman after he took a sip of coffee, ____ the project must be carried out before spring flood comes.
| A．As; that | B．That; which | C．This; which | D．It; that |
Nobody but a few little boys ___ in the garden now.
| A．are playing | B．play | C．plays | D．is playing |
The two companies have reached a partial agreement, but several differences still ___ between them.
| A．happen | B．survive | C．appear | D．exist |
Not until he left home ______ to know _______ important the family was for him.
| A．did he begin; what | B．had he begin; how |
| C．did he begin; how | D．had he begin; what |
―Are you satisfied with what she has done?―Not a little. It can’t be ________.
| A．any worse | B．any better | C．so well | D．so bad |
Three students from Changjiang college _____ while saving the ______ boys.
| A．got drown; drowning | B．got drowned; drowning |
| C．were drowned; drowned | D．were drowning; drowning |