Choose the letter A, B, C or D to complete the sentence below
The Sahara is one of the harshest environments on Earth, covering 3.6 million square miles (9.4 million square kilometers), nearly a third of the African continent, about the size of the United States …...….. Alaska and Hawaii.

By the time I ______ this report, I will give you a ring. 

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The Salem Literary Festival takes place each November and  ___________  a number of prominent authors.

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The overall achievements of the social media marketing team _____   by the number of people following the organization on social channels.

 It was difficult to guess what her ................ to the news would be.

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Ms. Kimberley was asked to find out which gallery displays the works   ________ are shown in the book of paintings.

Although they ———————, they did not lose heart.

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The upscale boutique Jane's Closet is known for selling the most stylish ------- for young professionals.

Music is part of virtually every culture on  _______, but it varies widely among cultures in style and structure.

$507, $707. Let’s ................... the difference and say $607.

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Dealers are allowed   __________Giải thích:
Tạm dịch:  customer and sales information via the recently installed database system.

Where have you been? You were .................  to be here half an hour ago.

_____ the book, please return it to me

He sent his children to the park so that he could have some ..................

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Mr. Albrecht's ____________   in repplying the HR director's e-mail demonstrated that he was highly interested in the position.

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All the villagers ___________ to safe areas before the tsunami happening last night.

The thief returned the old lady’s money because he had a guilty _____.

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The city ...........we visited last year was very beautiful.

Do you remember Mr.Brown, .............. taught us how to write an English essay?

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The newly revised employee rules and regulations will be ___________   display throughout the facility.

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Businesses are invited to take a look at their operations and consider how they can improve them  ______  the use of technology.