The little problems ______ we meet in our daily lives may be inspirations for great inventions.
that
as
where
when
As for the plan some agree while others don’t. I’m one of _____ opposed to it.
We have just heard a warning on the radio _____________ a typhoon may be on its way.
___________ we can have clean drinking water lies in ___________ effective measures will be taken by the government about water pollution.
Love is_____ makes you smile when you are tired.
It is difficult for us to imagine_____ life was like for slaves in the ancient world.