Revision of grammar

However careful I try to be, I am always taken ___ by my students' tricks on April Fool's Day.

The other day I forgot totake the meat out of the freezer to ___ it so we had to be vegetarians for a day.

Mark seems to be in love with his wife, but he is thought ___ her for money.

___ his latest project brought him quite a handsome income, Jack still couldn't afford a holiday abroad.

In the current economic situation, banks are unlikely to increase their interest ___ soon.

Parents need to remember to praise their children for their accomplishments not only to ___ them off when they have done something wrong.

It is quite rare to come across elderly people with no ___ teeth. I guess it is because of poor dental hygiene when they were younger.

Since you are aware of me being allergic to cats and rabbits, you ___ have bought this lovely Persian.

It is feared that after severe flooding there might be an ___ of cholera because water supplies have been contaminated.

The family agreed to pay the ransom to the kidnappers, ___ infuriated the police.

I was not aware how icy the road was until the car ___ and I nearly hot a tree.

To begin with, the offer sounded excellent. However, we ___ after we discovered some financial pitfalls connected with it.