Steps must be taken ________ this kind of disaster will never happen again.
We can hardly imagine Tom________the heavy task in a single day.
The man was quite________of the danger;he had no choice but to face it.
They pulled down the old buildings for the________of making room for the newlybuilt motorway.
If you are worried that the tickets will be sold out,you can buy a ticket________.
The Smiths don't usually like staying at ________hotels, but last summer they spent a few days at a very nice hotel by ________sea.