Not until the child fell asleep_______leave the room.
| A．did the mother | B．does the mother |
| C．was the mother | D．is the mother |
She felt disappointed when she found out they had gone swimming____ her.
| A．but | B．except | C．except for | D．without |
We left Xi' an _.___ a very hot summer afternoon.
| A．on | B．in | C．during | D．by |
The teacher is busy ____ correcting papers.
| A．for | B．in | C．on | D．of |
The teacher is busy ____ teaching.
| A．with | B．for | C．on | D．of |
____ the sun, nothing would grow.
| A．For | B．With | C．Under | D．Without |