Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe _____.
—How did you get in touch with Mrs.Green? —Well,it seems to me that you've forgotten ________ me her telephone number the other day.
Has the boy who was made use of ________ realized his mistakes?
Since the work is so tiring ,I won't accept it even if ________ twice as much the money.
Some of our industrial products may well be said ________ advanced level.
With the plane ________,some passengers on board feel sick and want to throw up.