John and his friend gave many books to_______ 

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It’s difficult to ……….. the difference between margarine and butter.

Once the cause of the flooding on the ground level has been ................., the warehouse can resume operations.

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Today is ............... hottest day of the year.

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I've always got .............well with old people.

The latest training . ............. contains tips on teaching a second language to international students.

Is Miss Wilson very fond ............... French food? - No, she is not used  ................. having French food.

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Definition: _____ : at the end of a period of time or a series of events. For example: I found it hard to follow what the teacher was saying, and ______ I lost concentration.

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To satisfy different tastes, we strive to offer a   ____________ assortment of brands.

You have to study harder in order to ............... your classmates.

Each month you will be asked to review two joumal articles; your ................. article will be sent to you by the end of the week.

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----------- the candidate's official announcement that he will run for office, he met privately with his advisors.

The problem of_______ in big cities, which stems from uncontrolled migration from rural areas.

Since the supply is ...................., all customers are encouraged to make orders as soon as possible.

Find the mistake in each of the following question: 

A novel is a story long enough to fill a complete book, in that the characters and events are usually imaginary.

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Those giving demonstrations at the department store ______________   explained the product's features and benefits.

I can’t say we’re friends. Actually, I don’t ____with him very well.

The cheapest mode of transportation ....... the airport is the shuttle bus that ferries passengers to the nearest subway station from the airport.

.........................for the money management seminar will be forwarded to all the managers tomorrow.

Choose the correct answer in each sentence.

Poleberry Local Marketplace takes pride in carrying only  _____________  processed dairy products from the region.

They have made a substantial change; that means, they have made a(n)                    change.