giúp mình với, mình đang cần gấp

Bài 1. Dung dịch X chứa a mol Mg2+, b mol Fe3+, c mol NO3- và d mol SO42-. Hãy lập biểu thức liên hệ giữa a, b, c, d.

nêu yếu tố "tình" trong bài thơ ông đồ -Vũ Đình Liên mọi người chỉ cần nêu nó ở đâu với phân tích tại sao thôi là được, không cần viết thành đoạn văn hay bài văn đâu ạ mình cảm ơn trước

Write a short paragraph with this open sentence: "My favourite extreme sport is bungee jumping."

giúp mình với, mình đang cần gấp

Viết bài thuyết trình về hoạt động giải trí yêu thích của bạn ( càng dài càng tốt nhé mọi người )

Read and complete. There is one example .do,yes,shelf,have,game Mary:What's this ,Linda Linda:It's a doll.Do you ...a doll? Mary:...,I do.I have two.Let's play a... Linda:No,thanks. .... you have a yo-yo? Mary:No,I don't, but Tom has one on the ...

calli: Đồ bỏ bạn theo try ._. digi/tradi, tone hường/xanh dương, có tâm, xấu = pay đầu @Mint

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61. You will never meet anyone more dangerous than Mrs Jones. ⇨ Mr. Jones is the most __________________________________________________ 62. Man has never had such efficient servants as computer. ⇨ Computer is the most __________________________________________________ 63. I haven't played football since 2000. ⇨ The last time _________________________________________________________ 64. I haven't been to HCM city for 2 years. ⇨ The last time _________________________________________________________ 65. I 've never met such a famous person before. ⇨ It is the first time ______________________________________________________ 66. She hasn't seen that boy here before. ⇨ It is the first __________________________________________________________ 67. She hasn't written to us since last year. ⇨ The last time _________________________________________________________ 68. She started to learn English 8 years ago. ⇨ It’s _________________________________________________________________ 69. He hasn't laughed so much for ages. ⇨ It’s _________________________________________________________________ 70. I haven't enjoyed myself so much for years. ⇨ It’s _________________________________________________________________ 71. The telephone rang for hours. ⇨ It’s hours ____________________________________________________________ 72. I haven't seen him for ages. ⇨ It’s _________________________________________________________________ 73. I have learned English for four years. ⇨ We started ___________________________________________________________ 74. Ly’s father started to stop smoking last year. ⇨ Ly’s father ___________________________________________________________ 75. The editor hasn’t written to Mai for a month. ⇨ The editor last _________________________________________________________