In which of the following sentences is all PUNCTUATION correct?

Which one of the underlined words or phrases is INCORRECT? I don't had enough money to buy a bus ticket, so I'll…

If you had taken better care to do your research, a lot of time could……..

When you have a question, you should ask someone ...... can give a clear answer, like your teacher.

I asked for something to drink, and I ..................a glass of water.

In which sentence is all PUNCTUATION correct?