V. REWRITE.

1.Jane plays the piano extremely well although she is very young.

Despite her young age, she plays the piano very extremely well.

2.Josh wants to earn more money so he is applying for another job now.

As

3.My mother had cooked me breakfast before she went to work.

After

4.I prefer staying at home to going out because I do not like socializing.

Since

5.Everyone enjoyed the party last night although the food was not so good.

In spite of

6.Jim can not catch up with his classmates because he often plays truant.

As

7.Peter studies very hard so that he can get high scores.

In order to

8.Many of my friends enjoy going shopping whereas .I don’t like this.

But

Tìm x: x²+4x+4=x²-6x+9
Chứng tỏ B=x²+2x-2<0 với mọi x thuộc R