Listen and fill in the blank with NO MORE THAN THREE WORDS.

What does family(1)___to you? In a perfect world, all families should be happy and everyone should(2)___together. I know(3)___families that have many problems. Brothers and sisters(4) ___each other, parents who never talk each other. I wonder why this is. How can you live so(5)___to your family members? There is a lot of talk in the(6)___about the breakdown of family life.(7)___is rising everywhere in the world. This means single parents have to spend(8)___whit their children, which creates problems. Maybe the(9)___of modern life puts too much pressure on families. It(10)___as though family life was better a generation or two ago. Is this true for families in your country?

Question 4:

Trong mặt phẳng cho một tập hợp gồm 6 điểm phân biệt. Có bao nhiêu vectơ khác vectơ 0 →  có điểm đầu và điểm cuối thuộc tập hợp điểm này?

A. 15

B.  12

C. 1440

D. 30

20% của 520 là:

A.  401

B.   104

C. 140