By using the words in brackets, join each of the following sentences into logicalones. You may need to change some of the words

1. A student has studied English for a few years. He may have a vocabulary ofthousands of words. (who)

2. Between formal and colloquial English there is unmarked English. It is neither soliterary and serious as formal English, nor so casual and free as colloquial English.(which)

3. He bought a jeep. His friend advised him against it. (although)

4. Good writing requires general and abstract words as well as specific and concreteones. It is the latter that make writing vivid, real and clear. (though)

5. It was raining hard. They could not work in the fields. (so ... that)

6. The politician is concerned with successful elections. The statesman is interested inthe future of his people. (whereas)

7. The results of the experiment were successful. The school refused to give any help.(although)

8. He chose to study computer science. Computer science has good employmentprospects. (because of)

9. Mary walked very slowly. She did not catch the train. (if)

10. He is not coming. The meeting will be put off till next week. (in the event of)

I. Rewrite each sentence so that it contains the word or words in capitals, and sothat the meaning stays the same.

1. Everyone thought the book was written by the princess herself. HAVE

2. I can’t lift this table on my own.UNLESS

3. I won’t stay in this job, not even for double the salary. IF

4. The coins are believed to have been buried for safe keeping. IT

5. If you insist on eating so fast, of course you get in indigestion. WILL

6. It’s pity! You aren’t going to Ann’s party. WISH

7. Someone punches Sam in the face at a football match. GOT

8. If you found the missing money, what would you do? WERE

9. They suspended Jackson for the next two matches. BANNED

10. Please come this way, and you’ll see if Mr. Francis is in. WILL

1.If I you (be)____ the president, what___ you (do) _______ to help the environment?

2. They get sick so often. If they (exercise)_____ more, they (be) _____ heathier.

3. Ngoc`s mother is unhappy. If Ngoc (tidy) _____ her room every day. her mother (not be) ____ so upset.

Tìm x,y để biểu thức A đạt giá trị nhỏ nhất

\(A=\sqrt{x^2+2y^2-6x+4y+11}+\sqrt{x^2+3y^2+2x+6y+4}\)