The professor could hardly find enough grounds on which to base his arguments ______ the new theory.
_______ on earth is it _______ has eaten up all the leaves of these young trees in just one night?
--- Perhaps John’s not in. --- _______. Look, the light is on.
___ delicious, some western foods are very inviting but not good for children’s health.
Take care! Don’t get the oil on your clothes, for it _______ easily.
Not until recently _______ paid work outside the home.