Have you just eaten a candy?
a- Yes, I´ve just eaten a candy.
Did you read that book?
b- No, I didn´t read that book.
How much have you spent (on it)?
c- I´ve spent $1,000.
What did you buy?
d- I bought sweets.
Has she done this exercise yet? (Ojo, en las preguntas usamos palabra ´´yet´´)
e- Yes, she´s already done this exercise.
When did she do it?
f- She did it last week.