Answer:
fui, fue, estamos, compre, compre, necesitamos, llevamos, llevan, fueron
hope this helps!
Carlos, te acuerdas de cuando fuimos a Cancun hace dos años atras?
Answer:
Since you need to form a question, but place the subject at the end, it means that the entire question will be really inverted, meaning that the order of words will be a little jumbled. This is the way to do it:
Termina a las dos la clase?
As you can see, the subject 'la clase' is placed at the end, and the word order is inverted.