Complete the following sentences using the cue words.

1.Most of Vietnamese are tired preparing for Tet.They look forward to it.(although)

Complete the following sentences using the cue words.

1.The paddy/field/mountain/usually/not/as/large/those/in/low/lands.

2.The/path/through/Dead Valley/most/dangerous/in/my/country.

3.A city/more/interesting/activities/the countryside.

Yoga originates in India and it is good for both your body and mind. Anyone can do yoga - women or men, adults or children. Special children's classes are devised to help them to cope with pressures they feel from their schoolwork. By learning how to co-ordinate breathing and movement, yoga helps them to develop body awareness, self-control, and flexibility. Taking up yoga also helps them to focus and become better with daily routines. Start doing yoga by setting aside a regular time for it. Go slowly, listen to your body and don't push it too far as yoga is not a competitive sport. Study each pose and practise it as ỵou control ỵour body and mind. Prepare well before each session: avoid tight clothing and a full stomach. An ideal time to do yoga is berore breakfast.

1. Where does yoga come from?

_______________________________________

2. Who can do yoga?

_______________________________________

3. Why should children do yoga too?

_______________________________________

4.What is the best time for yoga?

_______________________________________

5.Does yoga help children concentrate on their work?

_______________________________________

IV. Circle the mistake then correct it in each sentence

17. When you come to (A) Brazil, you should tip (B) the waiter 10% for (C) the bill (D).

18. When eating (A) in India, you always should (B) use the (C) right hand. Never use (D) the left hand.

19. On my family (A), children have to (B) get permission (C) before leaving (D) the dining table.

20. When (A) we were young, we have to (B) stand in a row (C) to greet the guests (D) .

21. People have followed (A) the tradition of (B) give (C) lucky money on Tet for (D) a long time.

a)Cho a,b,c thỏa mãn \(a+b+c=0.CMR:a^3+b^3+c^3\)

b)Phân tích thành nhân tử:\(\left(x-y\right)^3+\left(y-z\right)^3+\left(z-x\right)^3\)

Tính:\(\left(1-\frac{1}{2^2}\right)\left(1-\frac{1}{3^2}\right)\left(1-\frac{1}{4^2}\right)...\left(1-\frac{1}{2019^2}\right)\)

CMR:a²-b²-c²+2bc>0,với a,b,c là độ dài ba cạnh của một tam giác.

\(a)a-b=1;ab=6\).Tính \(a^3-b^3\)

\(b)Cho\) \(x+y=1\) .Tìm gía trị biểu thức:\(P=2\left(x^3+y^3\right)-3\left(x^2+y^2\right)\)

a)Cho a,b,c thỏa mãn a+b+c=0.CMR:a³+b³+c³=3abc

b)Phân tích thành nhân tử:(x-y)³+(y-z)³+(z-x)³

Tìm giá trị nhỏ nhất của biểu thức:\(A=x^2-8x+17;B=x^2-x-5\)