N-metylmetanamin có công thức là 

A. CH₃NHCH₃ 

B. CH₃NH₂ 

C. CH₃NHCH₂CH₃ 

D. C₂H₅NHCH₃ 

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

Tony and Bob are talking in their classroom.

Tony: “We are buying Lily a graduation present.” - Bob: “___________”

A. She’s out of my league.

B. Can you all be more down-to-earth?

C. I’m raking in money now.

D. Could I chip in?