- 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.
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