Sắp xếp từ hợp lí :

1, they/ monument/ ago/ build/ ten/ this/ did/ years/ ?/

did they build this monument ten years ago?

2, will/ go/ be/ afternoon./ our/ for us/ it/ to/ to/ club meeting/ this/ necessary/

it will be necessary for us to go to club meeting this afternoon

3, trip/ than/ Ho Chi Minh/ the/ was/ expected./ cheaper/ City/ I/ do

the trip to HCM City was cheaper than i expected

4, the/ hí/ looked/ teeth/ at/ and/ worry./ dentist/ him/ told/ to/ not

the dentist looked at his teeth and told him not to worry.

5, didn't/ morning/ go/ of/ school/ her/ Thao/ thí/ because/ snicknes./to

thao didn't go to school this morning because of her sickness

Passive with the present perfect:

1. The Olympic Games organisers have invited them to London.

They have been invited to London by the Olympic Games organisers

2. Have people ever eaten eggs with chilly?

Have eggs ever been eaten with chilly?

I. Sắp xếp câu

1. are / talking / class / about / the / some / last//

some are talking about the last class

2. yard / break / the / always / school / at / is / time / noisy//

the school yard at break time is always noisy

3. usually / portable / have / some / with / earphones / CD players / small//

some usually have small earphones with portable CD players

II. Hoàn thành câu

1. these activities are the same all over the world//

2. we study about areas around the world and its people in Geography//

3. Huy gets online reading articles in his free time//

4. have you ever be late for school?//

1.After work , he comes back home and has lunch at a quarter past twelve

2.In the afternoon , he does the housework and plays games

3.In the evening, after dinner he watches T.V or reads books

Chia động từ:

1.The snow prevented us from (drive) a car

=>The snow prevented us from driving a car

2. Is she (not/learn) hard , she will fail the exam

=>If she does not learn hard , she will fail the exam

3. When he arrived , I (have) dinner

=> When he arrived , I was having dinner

=>

Do góc M₁ và M₂ cùng nằm trên 1 đường thẳng nên M₁+M₂=180⁰

Mà M₁-M₂=40⁰

=>M₁=(180⁰+40⁰):2=110⁰

=>M₂=180⁰-110⁰=70⁰

Do a//b

=>M₁=N₄(2 góc so le trong)

=>N₄=110⁰

M₂=N₃(so le trong)

=>N₃=70⁰

bởi vì ở miền núi, cuộc sống còn có nhiều lạc hậu, không như ở đồng bằng , người dân đa số không dùng muối I-ốt dẫn đến thiếu hàm lượng i-ốt trong cơ thể gây bướu cổ=> tỉ lệ mắc bướu cổ ở miền núi cao hơn đồng bằng