It was recommended that passengers _____ smoke during the flight.

_____ your timely advice,I would never have known how to go about the work.

She asked that she _____ allowed to see her son in police custody.

_____ their help, we would not have succeeded.

If you _____ in such a hurry,you _____ sugar into the sauce instead of salt.

Under this____pressure some of the rocks even became liquid.

Mary tiptoed over and took the clock away because she hated to hear it___when shewas trying to go to sleep.

Modern____perhaps causes more problems than it solves.

Miss Green was____$100 for driving after drinking.

To obtain a satisfactory result ， one must apply two____of paint on a clean surface.