Bài 1:Chia động từ trong ngoặc ở dạng thích hợp

1.Quan(chat)on the phone.

-> is chatting

2.The students(be)hungry.Then want(eat) something.

-> are - to eat

3.She (listen)to the radio

-> is listening

4.The boys (not/visit) their paresent this summer vacation.

-> won't visit

5.Minh(vacaum)the carpet everyday.

-> vacaums

6.Tài often(clear)the table and (wash) the dishes after meal.

-> clears/ washes

Bài 2:Viết lại câu sao cho nghĩa không đổi.

1.Let's have a pinic.

-> Why don't we have a picnic?

2.Hoa is thinner than Huyen

-> Huyen isn't as thin as Hoa

3.Does your class have forty students?

-> Are there forty students in your class?

4.Does your father cycle to work?

-> Does your father go to work by bike?

5.She has blue eyes.

-> Her eyes are blue.

6.No house on the street is older than my house.

-> My house is the oldest house on the street.

1. What should we do to _________ electricity ?

A. cut B. take C. save D. waste

2. Fossil fuels are very common in our society but they _________ the evironment.

A. renew B. provide C. waste D. pollute

3. Wave energy is a source of _________ energy.

A. environment friendly B. environmentally friendly

C. environmental friendly C. environmentally friendliness

4. Biogas is ______ and cheap for cooking and heating.

A. plenty B. abundant C. serious D. expensive

1. His house is near his school.

→His house isn 't far from his school.

2. That motorbike belongs to Mr Trung.

→That is Mr Trung's motorbike.

3. Lan is more intelligent than her sister.

→Lan 's sister isn 't more intelligent than Lan.

4. What's the 'height of the Mount Everest ?

→How hight of the Mount Everest?

5. We have a two - month summer vacation

→Our summer vacation lasts two - month.

6. Vietnamese students have fewer vacations than American ones

→American students have more vacations than Vietnamese students.

7. I takes me about two hours each day to do my homework

→I spend two hours each day on doing my homework.

Mèo và rắn đều là loài bắt chuột làm thức ăn. Chuột lại gây ra rất nhiều tác hại trong đời sống của con người. Khi số lượng mèo nuôi và rắn trong tự nhiên suy giảm sẽ mất thiên địch để tiêu diệt chuột , số lượng chuột tiếp tục tăng lên và sẽ tiếp tục gây hại.

Làm giảm khả năng diệt khuẩn của da (5%), dễ bị vi khuẩn kí sinh gây bệnh làm da ngứa ngáy.