Scientists and engineers have invented filters and other methods of removing pollutants from industrial wastes.

Choose the correct answer in each sentence.

No passengers are allowed on --------board the aircraft's door has been closed.

After ten years in ................., Ravensdale Fiduciary Firm is expanding its factories to Shanghai, Hong Kong, Tokyo, Seoul, and Singapore.

For those .................. are determined to attend the seminar, tickets are available at the Human Resources Department

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The Spratly Islands and the Paracel Islands ……………….. Vietnam.

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As part of the writing workshop, participants will read their compositions ------ to the group.

As I have just had a tooth _____ , I am not allowed to eat or drink anything for three hours.

Many of these songs deal ________ important social issue, such as racial integration and the war in Vietnam.

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The novelist said that his writing was --------- influenced by the late writer Edward Truitt.

The decline in sales was ................. due to the lack of innovation in the ideas of the marketing team.

One's fingerprints are _______ other person.

I don’t allow my family __________ at all. 

The picture was painted by Laura, ...............  is being shown in an exhibition.

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During the holiday season, Schwartz Department Store will  ______________  special make- up gift sets.

_____________ of the students in my class could solve the problem yesterday.

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Seeking new sources of income, many regional orchards _____________   catering to tourists in the last few years.

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A gate agent at the airport announced a flight  _____________  caused by severe weather at the destination.

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Safe-Co has  ___________  home security products since its founding in 2008.

There was nothing else he could do. That was_______ 

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The editor granted Ms.Porter a deadline ------- so that some information in her building renovations report could be updated.

Jimmy: "You must have found reading my essay very tiring". - Kate: “     .”