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

If I spoke French, I ......... help the people, but I only speak English.

Physic is the science which ................. light, heat, sound and electricity.

Japanese is so difficult. I've been trying to learn it ...................... five years.

Jane: I'll pay Mia back tomorrow. Mia: What did Jane say? Bob: She promised ................................... you …

Mom: George! I… ........... for you since 5:00 to help me. George: sorry, mom I was in the basement.