Tìm lỗi sai và sửa lại

124. My friend was (A) crazy (B) although he was (C) informed of the news of his mother’s (D) death.

125. Thunder (A) is rarely heard beyond 15 miles (B) because of temperature (C) and wind vary at different (D) heights in the region around a thunderstorm.

Rewrite the sentences using the given words.

12-What would you do if you found some buried treasure? If you were……………..

13- If Paul hadn’t been interested, the project would have been abandoned. But for….

14- If by any chance you find my wallet, could you let me know? If you happen……..

15- I might be late. If so, start without me. If I……………………………………………

16- The fire was brought under control thanks to the night watch-man. If it hadn’t…...

17- Dick is in prison because a detective recognized him.

If a…………………………...

Từ đầu bài suy ra:

\(\left(x+y\right)+\left(y+z\right)+\left(z+x\right)=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\)

\(\Leftrightarrow x+y+y+z+z+x=\frac{13}{12}\)

\(\Leftrightarrow2x+2y+2z=\frac{13}{12}\)

\(\Leftrightarrow2\left(x+y+z\right)=\frac{13}{12}\)

\(\Rightarrow x+y+z=\frac{13}{12}:2=\frac{13}{24}\)

\(\Rightarrow x=\frac{13}{24}-\frac{1}{3}=\frac{5}{24}\)

\(y=\frac{13}{24}-\frac{1}{4}=\frac{7}{24}\)

\(z=\frac{13}{24}-\frac{1}{2}=\frac{1}{24}\)

Vậy...

Complete the second sentence with the same meaning.

1. He said: `` We must have a party to celebrate this`` -> He said that ....................

2. I'm on the tenth page of the letter I'm writing -> So far I ..........................

3. Minh last wrote to his pen pal five months ago. -> Minh hasn’t ..................

4. They usually wore jeans when they were young. -> They used................

5. We couldn’t go to school this morning because of the heavy rain. -> Because ...............

6. Practice speaking everyday or you can't improve your English. -> If ..........

7. Hard work is the secret of passing your exam. -> So long as.............................

8. You donot have to pay for elementary education in Viet Nam. -> Elementary education ..........

9. He was a fool to say that -> It is.........................................

10. Living in the city is exciting -> Some people find ..............................

Use the following sets of words and phrases to write complete sentences.

1. My uncle/ give up/ smoke / one year.

2. The noise / the traffice/ prevented /me/ go to sleep/

3. Look! / sun / set / mountains

4. In my life/ I / never be/ Pac Bo Cave.

5. It/ rain /./ I’d like / stay here / until / rain / stop.

Combine the sentences below, using the words in brackets.

1. Mr brown feeds the chicken. He collects their eggs. (not only....... but also)

2. He didn’t say any word and left the house (without)

3. He had stolen a gold watch. He was sent to prison. ( for)

4. She came home early so that she might have plenty of time to cook dinner.( to )

5. Lan has a nice voice. Everybody likes it. ( such .....that)

There is a mistake in the sentence. Find the mistakes and correct it.

1. Because they had spent too many time considering the new contract, the students lost the opportunity to lease the apartment.

Change the following sentences into reported speech

"You must do your homework everyday," said Mrs Hoa to us.

Fill in the blanks with a suitable prepositions.

Jacson was late because he was not aware ..........the time

Three prisoners escaped ...........the prison in May

Measuring money must be very difficult to carry...........

Take an umbrella with you. It will save you ........getting wet on the way home.

Qua đỉnh A của hình vuông ABCD, ta kẻ 2 đường thẳng Ax,Ay vuông góc voi nhau.Ax cắt cạnh BC tại điểm P và cắt CD tại điểm Q. Ay cắt BC tại điểm R và cắt DC tại điểm S

a) Chứng minh tam giác APS, AQR là các tam giác cân

b) Gọi H là giao điểm của PS và QR. M,N lần lượt là trung điểm của QR và PS Chứng minh tứ giác AMHN là hình chữ nhật

c) Chứng minh P là trực tâm tam giác QSR

d) Chứng minh MN là trung trực AC

e) Chứng minh 4 điểm B, N, M, D thẳng hàng