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Gardening belongs to the most popular group - doing things. Gardening is one of the oldest outdoor activities. It has something for everyone, even for children. Gardening teaches children about flowers, fruits, and vegetables. They can also learn about insects and bugs. When gardening, children learn to be patient and take on responsibility. They learn to wait for the plants to grow to maturity. And if they don't water their plants, their plants will die. This teaches them valuable lessons about responsibiliyt

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I.Building sentences using suggested words

1.He / do I the test / intelligent / than / friends

2. He /be/ fall/ in our class

3.This / be I long / street / in HCM city

4.Book / expensive / in the library

5. Mary/ study/ hard / classmates.

6.Horse/run/ quickly / his

I. Rewrite these sentences..

1.she can't do exercise so well as hin => He can

2. No one in the ellass Studies Maths as well as Nam =) Nam ...

3.No one in my family is as intelligent as Huy =) Hey.

4 . My brother doesn't work so hard as his friends =>My brother's...

5. This book is thicker than hers=) her...

6. Linh is the most intelligent in our class => No one...

7. He is so generous as my brother =) My...

câu 1. dãy chất nào sau đây toàn là Oxide

A. HCL, HNO3, NaCl            B, CuO, CaO, FeO

C, HNO3, H2SO4, CuO        D, HNO3, NaCl, H2SO4

câu 2. dãy gồm toàn oxide kim loại

a, CuO, CaO, SO2              b,Fe2O3, Na2O, BaO

c, SO2,SO3,CuO                 d, SO3, P2O5, CaO

câu 3. Oxide base tương ứng với Fe(OH)3

a, FeO         b, Fe2O3         c, Fe3O4            d, Fe

câu 4. Iron 2 Oxide là tên gọi của chất có công thức 

a, FeO      b, Fe2O3          c, Fe3O4             d, Fe

câu 5. đi phosphorus trioxide là tên gọi của chất có công thức

a, PH3      b, P2O3            c, P2O5                   d, H3PO4