21. She _____ for lost time by studying at weekends. A. got up B. set about C. made up D. put in 22. What is your opinion about Bob’s condition? - I recommend ___________ as much as possible. A. him rest B. that he rests C. that he rest D. him to rest 23. Alan and Sue ___________ an argument. They are not speaking to each other. A. must have B. must have had C. might have D. might had 24. ______________________, we tried our best to complete it. A. As though the homework was difficult B. Thanks to the difficult homework C. Difficult as the homework was D. Despite the homework was difficult 25. Only when the ground is kept moist, _________________ germinate. A. will grass seeds B. grass seeds will C. does grass seeds D. grass seeds does 26. She would rather I ________ harder now. A. study B. studying C. am studying D. studied 27. The concert didn’t come ______ our expectations. A. up to B. up against C. round D. up with 28. Excuse me, is anybody sitting here? - “_________________________”. A. No, thanks. B. Yes, I am so glad C. Sorry, the seat is taken D. You are welcome. 29. My uncle _______ golf when he retired from work. A. took on B. took up C. took over D. took after 30. By the end of next month, we _______ our English course. A. have completed B. will be completed C. will have completed D. completed

Giúp mình câu 3 với ạ, mình hết điểm rồi ạ.

Làm hộ mình bài 2 với. Thank :3

Nêu suy nghỉ của em về hình ảnh người bà trong đoạn trích dưới đây từvnăm giặc đốt làng cháy tàn cháy rụi _ 1 ngọn lữa chứa niềm tin dây dẫn( trìh bày khoảng 5 đến 7 dòng).

Vẽ hộ mình nha :> Tô màu luôn Có chữ kí nha

Tả ba bốn câu về chú mèo con bị bỏ rơi trong 1 chiếc hộp

Viết lại câu sử dụng từ gợi ý: 1, We will have a vacation that lasts for three months ( three-month) 2, We will make a Sa Pa tour that lasts four days ( four-day) 3, She gave me a note that worths fifty dollars ( fifty-dollar)

26. Tiến hành điện phân dung dịch chứa hỗn hợp các ion Fe2+; Sn2+; Zn2+; Ag+; Ni2+. Sắp xếp thứ tự các cation bị khử trên cathode. Cho biết : Eo (Fe2+/Fe) = -0,44 V; EAgoC /Ag = 0,8V ; EoCNi2+/Ni= −0,26V ; EoCH2O/H2 = −0,83V; : Eo (Zn2+/Zn) = −0,76 V; Eo (Sn2+/Sn) = -0,14 V. Gíup e với ad ơi......................................

Rút gọn: a) (a^2+b^2-c^2)-(a^2-b^2+c^2)^2 b) (a+b+c)^2+(a+b-c)^2-2.(a+b)^2 c) (a+b+c)^2+(a-b+c)^2+(a+b-c)^2+(b+c-a)^2

Mình xin hỏi 3 câu trong hình ạ (20,21,22), hy vọng đc chi tiết.