George wouldn't have met Mary ______ to his brother’s graduation party.

A. hadn't he gone

B. had he not gone

C. if he has not gone

D. if he should not have gone

\(50\%x+\dfrac{2}{3}x=x+4\)

\(x\)+ \(\left(\dfrac{1}{2}+\dfrac{2}{3}\right)=x+4\)

\(x+\dfrac{1}{3}=x+4\)

Mình k biết bài này có đúng hay ko, đừg ném đá (mk đủ đá xây nhà rồi)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Tom painted his room black. It looks dark and dread. He x another color.

A. must choose

B. should choose

C. should have chosen 

D. must have chosen

Axit aminoaxetic không tác dụng với dung dịch chất nào sau đây?

A. HCl. 

B. KCl.

C. H₂SO₄ loãng. 

D. NaOH.