It would be impossible for him to leave hospital tomorrow if he first aid when the accident happened.
| A．hadn’t been given | B．wasn’t be given |
| C．shouldn’t be given | D．wouldn’t be given |
I’ll let you know ____ he comes back.
| A．before | B．because |
| C．as soon as | D．although |
She will sing a song ____ she is asked.
| A．if | B．unless | C．for | D．since |
We will work ____ we are needed.
| A．whenever | B．because | C．since | D．wherever |
Read it aloud _____ the class can hear you.
| A．so that | B．if | C．when | D．although |
_____ you go, don't forget your people.
| A．Whenever | B．However | C．Wherever | D．Whichever |