1. on me : say this if you want to pay for someone's food or drink.
2. stuck in traffic : in a traffic jam
3. it slipped my mind : I forget
4. under a lot of pressure : feeling stress
5. drop something off : take something to a place and leave it there
6. Have you done something yet? : ask this to find out if something has already happened
Examples:
1. (at a restaurant)
"I'll pay."
"No, lunch is on me this time."
"Thank you."
2. "Why are you late?"
"I was stuck in traffic."
3. "Have you had lunch yet?"
"No, I'm hungry."
4. "I have a lot of deadlines this month. I'm under a lot of pressure."
5. "Could you take this book back to the library?"
"yes, I'll drop it off on my way to work."
6. " You forgot to buy milk!"
"Sorry. I was so busy it slipped my mind."
