should have 。。tara ii desu ka

now let's learn how to request advice from friend, teacher or other people, we can use following form

.... tara ii desu ka?
...たら　いい　ですか？
should have...

here some example sentence that request advice from another pople
1. Where should i buy a car ?
どこ　で　車を　買ったらいいですか？
doko de kuruma wo kattara iidesuka?

2. 時間がないばいわ　どしたら　いい　ですか？
jikan ga naibaiwa doshitara ii desuka?
if (we )do not have time, what should we do ?

3. おなかが　つきました　とき　何を食べたらいいですか？
onakaga tsukimasita toki nani wo tabetara ii desuka?
when (we) hungry what kind of food should we eat ?

it' easy right..
remember the sentence form, and try to make sentence by your self