cho biểu thức P = \(\left(\dfrac{1-a\sqrt{a}}{1-\sqrt{a}}+\sqrt{a}\right).\left(\dfrac{1+a\sqrt{a}}{1+\sqrt{a}}-\sqrt{a}\right)\)

a, rút gọn P

b, tìm a để P < 7−4√3

Our teacher advised us (try)................ our best to study English well

Find a mistake in each sentence and correct it

1. She wants selling this house

2. I would like = I'd like eat fish

3. Would you like having dinner with my family?

4. They decided going to Nha Trang beach last month

5. She is able speak English well

6. I was delighted passing my exam

7. He is very happy getting a present/ gift

8. We are all lucky catching the last bus, so we go home late in the evening

9. It takes me 20 minutes go to school by bus every day

10. My father asked me go to bed early last night

11. Our teacher advised us try our best to study English well

12. She asked me not tell the truth

13. Don't forget do your homework

14. Remember write to me

15. She enjoys to read newspapers and magazines

1. She was able (row)....................... a boat last year

2 I have just finished (write)............ a letter to my father

3. She missed (catch)............. the first bus

4. She asked me (not/ tell)............ the truth

5. Don't forget (turn)............... off the lights before leaving home

6. Remember (send)............this letter for me

7. In VietNam people love (read)............. newpapers and magazines

8. I was delighted (pass)........... my exam

9. It took her an hour (drive)..........a car to work yesterday

10. The clown made her (laugh).............a lot

11. Would you mind (open)................. the door?

12. Do you mind (help) .............. me with my homework?

1. The program is designed for general _______

2. The use of computer has greatly ________ the firm's ability to keep accurate records

3. The satellite was successfully_____________ last year

4. I also employ about half-a-dozen workers, some of whom are the sole_________ of their families

5. This_________experience for students is real work in a small business working environment

Part 1:

1. ..........she has prepared everything, she is still worried

2. Edison,......invebted the electricity light bulbs, was a great scientist

3. We were ..........that you would miss the flight

4. That man was rich. ........., he was not happy

5. I'm looking forward to .........her very much

6. Turn ......... the music. It's too loud

7. I'd like to arrive......... if I can

8. I........watching a comedy on TV

Part 2:

1. We stared cooking for the party two hours ago

-> We have ........................ for two hours

2. "Will you repaint your house for Tet?", my uncle said to me

-> My uncle asked me...............my house for Tet

3. Mr Tuan isn't a doctor, so he can't treat people

-> Mr Tuan could treat people..............doctor

4. They began using taht computer three months ago

-> That computer has.................three months

5. "Don't forget to phone your mother", she told him

-> She reminded.................mother

6. Emily is sick today, so she cannot go to school

-> Emily could go to school................today

7. Lan cooks better than Hoa

-> Lan is................Hoa

8. What a pity! I can't come to your party

-> I wish................... your party

9. We live in a comfortable hotel

-> The hotel which.................. Comfortable

10. Lan was sick, so she couldn't go to school

-> Lan couldn't go to school...............was sick

11. Yesterday I bought the T-Shirts. They are very colorful

-> The T-Shirts which...................are very colorful

12. The plumber can't come to my house today. He helps me check the pipes

-> The plumber..................... the pipes can't come to my house today

13. What about using banana leaves to wrap food? -> I suggest that banana leaves...................wrap food

1. Cấu tạo của công tắc 3 cực? Mạch điện gồm 1 bóng đèn đóng ngắt ở hai vị trí có tên gọi là gì? Khi lắp cần thiết bị gì? Tên gọi khác mạch điện là gì

2. Nêu tên các dụng cụ trong mạch điện ccaauf thang? Số lương cầu chì? Thao tác nào thuộc bước nối dây mạch điện

3. Quy trình lắp mạch điện 1 công tắc 3 cực điều khiển 2 đèn? Vai trò của công tắc ba cực trong mạch một công tắc 3 cực điều khiển 1 đen? 

4.Nêu tên các dụng cụ điện trong mạch điện 2 công tắc 2 cực điều khiển 2 đèn và ta nên lắp thiết bị nào trước?

trách nhiệm của công dân trong việc vi phạm pháp luật?

Bạn Tiến đang học đại học năm 3 kiến trúc, thì nghỉ vì gia đình khó khắn. Tiến xin vào một xưởng điêu khắc để làm, vì có chuyên môn làm tốt nên chủ xưởng kí hợp đồng làm việc hai năm với mức lương khá cao. Làm việc được 15 tháng Tiến nghỉ việc để đi học lại.

Theo em Tiến đúng hay sai? Vì sao?

Part 1:

Part 2:

1. ________are concerned about the air pollution in big cities. (environment)

2. I think Mother's Day should be celebrated _______. (nation)

3. In Western countries electricity, gas and water are_______. (need)

4. The ending of the tool was entirely________. (predict)