a) trình bày dãy phản ứng hóa học Fecl3->Fe(OH)3->Fe2(SO4)3 ->Fe(NO3)3->Fe->Fecl2>Fecl3 b)Nhận bt các chất Na2SO4 ;Nacl;H2SO4; Ba(OH)2

6. You should stop eating ___________ chips. They can make you fat.

A. salty B. bland C. spicy D. greasy

7. Studies suggest _____________ only when you are most active and giving your digestive system a long break each day.

A. eating B. being eating C. to eat D. being eaten

8. When we were on holiday, we spend too __________ money.

A. a lot of B. many C. much D. lots of

9. If Tom (not tidy) up____________ his room, Victoria (not help) ___________ him with the muffins.

A. not tidies / will not help B. is not tidy/ will not help

C. doesn’t tidy/ will not help D. didn’t tidy/ will not help

10. If you (eat) ____________ too much junk food, you (not lose) ____________weight.

A. eat/ will not lose B. eats/ was not lose

C. ate/ will not lose D. will eat/ will not lose

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.