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E. Choose the most suitable words to fill in the blanks.

1. At her trial in 1431, Joan of Arc was accused of being in______ with the devil.

A. cooperation B. association C. league D. conjunction

2. During the First World War, an______5 million people lost their lives.

A. assumed B. estimated C. envisaged D. approximated

3. The aim of the council’s latest campaign is to______the use of the new recycling facilities.

A. project B. prosecute C. promote D. provide

4. There was a great scandal when it turned out that the Bishop, who was meant to be,______, had a son.

A. celibate B. singular C. immaculate D. separated

5. According to psychiatrists, many violent criminals harbor feelings of ______and insecurity.

A. insufficiently B. shortage C. inadequacy D. scarcity

6. Many students find the concept of a fourth dimension difficult to______.

A. hold B. clutch C. grab D. grasp

7. If you want to be successful at writing complex computer programs, you need to adopt a more______approach to your work.

A. systemic B. systematic C. synthetic D. symptomatic

8. The doctor told Harold that he had a mild chest infection and that there was no cause for______.

A. anxiousness B. worry C. nervousness D. concern

9. The acrobats at the circus performed some very impressive ______ .

A. deeds B. exploits C. actions D. feats

10. I’m not sure my brother will ever get married because he hates the feeling of being______.

A. tied up B. tied in C. tied in with D. tied down

Fill in the blanks with the correct forms of the phrasal verbs made from the two list below.

go/ make/ break/ be/ take/ put/ come/ get/ turn/ have/ run

off/ out/ down/ for/ with/ through/ by/ on/ into/ over/ up/ to/ in

1.I had to throw the milk away because it ________ .

2.They had the dog________because it suddenly ________ a child for no reason.

3.I couldn’t________the news Jack told me about his settlement in Africa.

4.The children________their teacher the first time they saw her.

5.It________that we were not exempted from the English test as we had expected.

6.You________a lot of excuses so far. We never believe your single word.

7.On her way to work Jane________her old boss whom she had never wished to meet again.

8.I think you should________early tonight. You look very tired.

9.In the middle of his speech, the chairman________ to blow his nose.

Phân tích đa thức thành nhân tử

\(xy^2+\dfrac{1}{4}x^2y^4+1\)

\(16xy^2-8x^2y^4-1\)

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