III. Put the correct form of the verb in brackets. 21.If there (be)……no wars , people ( become)………happy. 22. If today ( be)……….Sunday, we ( have ) ………. a lot of fun. 23.The earth is seriously polluted. I wish it ( not be) ……. polluted like that. 24.What …………..you ( do) ……..if you ( see) ……..a UFO ? 25.If you ( practice) ……..English with a native speaker, your pronunciation ( improve) ……. 26.We ( save) ……………a lot of natural resources if we ( use) …….solar energy. 27. If I ( be ) ……….you, I ( not accept)……. his invitation. 28. What a pity she is not here. If she ( be) …..here, we ( have) ….. lots of fun. 29. I may be free tonight. If I ( be) ……. free tonight, I ( come) ….. to see you. 30.John wishes he ( have) ……….a good job in the future. 31.It’s too cloudy for the picnic today. I wish the sun ( shine)…….. right now.

cali : I love you tone màu tím nhạt digi có trang trí

Phân tích các đa thức sau thành nhân tử: a] 4x ² -y ² +4x+1

1. When they failed to pay their bill, the authorities decied ro cut.....the gas suppply to flat. A. Down B.out C. Across D.off 2. I've learned to put...all the noise A.up with B.out C.on D.off 3. - I need to get more exercise. - Why don’t you take _________ tennis? A. over B. up C. along D. off 4. I wish the teacher wouldn’t call _________ me in class .A. back B. in C. off D. on 5. What brought _________ your decision to quit your job?\ A. up B. off C. to D. about 6. I saw a jacket which I liked in the shop, so I went in and tried it _________ to see if it fitted me. A. on B. through C. away D. back 7. She got _________ her car to pick _________ some wild flowers. A. from / on B. in / at C. off / up D. out / for 8. The customer had tried _________ some blouses but none of them suited her. A. at B. with C. in D. on 9. The passengers had to wait because the plane _________ off one hour late. A. took B. turned C. cut D. made 10. The taxi stopped. He got _________ it and entered the house. A. by B. on C. into D. out of 11. When the train arrived at Bristol, passengers in turn got _________ it . A. off B. by C. out D. into 12.He called _________ his girlfriend to talk to her.A. up B. at C. in D. off 13. Parents bring _________ their kids the best way they know how. A. off B. up C. about D. with 14. After you fill the application form _________ , sign it and date it .A. on B. off C. out D. with 15. The nurse has to _________ at the midnight. {take (sth) over: take control of or responsibility for} A. take care B. take on C. take over D. take off 16. There is an inflation. The prices _________ .A. are going on B. are going down C. are going over D. are going up 17. When the tenants failed to pay their bill, the authorities decided to _________ the gas supply to the flat.A. cut down B. cut out C. cut off D. cut up 18. Billy hasn't been working; he won't_________ his examinations. A. get off B. get through C. keep up D. keep off 19. Did Mr. Tan_________ the class while Miss Fiona was ill in hospital? A. take away B. take over C. take up D. take off 20. Paula applied for the post but she was _________ A. turned down B. checked out C. kept under D. pushed ahead 21. Before you light ______ a cigarette, remember to ask for permission.A. up B. down C. on D. off 22. Mrs. Jones's husband passed away fast Friday. We are all shocked by the news.a. got married b. divorced c. died d. were on business

Vẽ cho mình đậu mầm buồn ik :'( NL: Nghịch -> tài khoản này (slap)

mng làm ơn giúp em vs đi ạ , e đang càn gấp 8p ạ

làm giúp mk với ạ mk đang cần gấp ạ :((

mng giúp em câu 1,2 vs ạ em đang cần gấp 10p, em sẽ đánh giá 5 sao ạ

E=(5x-2y)*(25x^2+10xy+4y^2)-(125x^3-7y^3) x=25 y=-10

Hòa tan 1,291 gam hỗn hợp kim loại gồm K và Ba vào 100 ml dung dịch HCl 0,2M; sau phản ứng thu được 235,2 ml khí hidro ởđktc và dung dịch X. a. Tính pH của dung dịch X? b. Cô cạn dung dịch X thu được m gam chất rắn khan. Tính m?