I believe the answer is the first one. I'm sorry if I'm wrong
Answer:
You need help in what? that is only a title
Answer:
A
Explanation:
it is asking when's the party so the obvious choice is where is it going to be so it's A
Answer:
All but the last one is correct
Explanation:
Ustedes (ser) is not tienen but 'son' meaning 'You all are' (both formal and informal)