6. Chia động từ : I want (buy) fish and vegetables. 7. Chia động từ : Would you mind (give)that book?
8. Chia động từ: Last night I went home after I (finish)my work.
9. Đặt câu hỏi cho cụm từ gạch chân: I go to school by bike
10. Viết lại câu sao cho nghĩa tương tự : I am interested in learning English => I like

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

the word that best matches the meaning of the expression "went to the big ocean" is died.

the goldfish died, which is why the father looks at the children mournfully. the "big ocean" is the father's way of saying fish heaven. he could have just said that the goldfish died, but this way, the children imagine the fish in a bigger, better place instead of just picturing a dead fish.

explanation:

i'm not sure i'm so sorry i will see what i can do