Chọn một từ đúng trong ngoặc để hoàn thành các câu sau.

There should be practical measures to control air __________ 

Câu hỏi liên quan

• For many years, scientists studying the effects that the sun has on human skin.

• She must retyping the report before she hands it in to the director of financing.

• It has been found that the length of light or dark periods influence certain activities of flowering plants

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• Mining over 2,000 years ago, copper is one of the earliest known metals.

• There are none young single people living in this town – only old people and young families.

• Before the Industrial Revolution come to America, the vast majority of the population had lived in rural areas.

• VOCABULARY AND STRUCTURES: Choose the best options 

  Some tiny organisms are _____ along by the currents. 

• Choose the best answer: 
  My parents once took me to Bat Trang village. I could make my own _________ there.

• However types of raw materials are used in making paper, the process is essentially the same.

• The residence of Greenville, Texas hold an annual Cotton Jubilee to remember the crop that caused their city to prosper

• Find the ONE among the underlined and marked A, B, C, D in each of the following sentences that needs correcting:

  He was tired so that he couldn’t continue his work.

•  I think women should continue __________ a career.

• Find a mistake in each following sentence: 

  Jimmy often spends 25 minutes to cycle to school every day.

• Though he did not develop sign language, Laurent Clerc brought it on America from France.

• Although the social sciences different a great deal from one another they share a common interest in human relationships.

• Identify the underlined word/ phrase (A or B, C, D) that needs correcting to become an exact one. 

  Look at the two (A) dictionarys and you (B) will see they are (C) the same (D) in some ways.

• We had planned to go to the movies, but, because of the amount of work I had, I spent the evening to study.

• Choose the best word or phrase to complete the following sentences:

  I’m very _________ to you for putting in so much hard work.

• Her application for a visa was turned down not only because it was incomplete and incorrectly filled out but also because it was written in pencil

• I hadn’t understood his directions. However, I asked him to repeat what he’d said