Thanks Milanya,

This is a sentence in an exercise, so I assume it's correct: Что ты посоветуешь мне подарить отцу? I understand it as, "What do you suggest I give (as a present) to my father?"
How can посоветуешь be in the perfective if it's the present tense? Or is it not?

What about these translations?
1. --How much does a good cap cost?
--Ninety rubles.
--That's too much.

--Сколько стоит хорошая шапка?
--Девятносто рублей.
--Это слушком дорогой. Should this be neuter or feminine?

2. --Where were you this morning?
--I went to the store.

--Где ты была сегодня вечером?
--Я ходила в магазин. Is ходила correct?

One more question: This is a sentence from the book. Я думаю, что я куплю ему галстук. Is the second я necessary here? It seems in most sentences like this, the subject isn't repeated.

Thanks for your help,
Z