I have kept that picture ______ I can see it every day,as it always reminds me of my university days in London.
| A．which | B．where | C．whether | D．when |
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 |
It is about ten years _____ I met you last.
| A．since | B．for | C．when | D．as |