Which of the following sentences has the CORRECT WORD ORDER?

I'm ........................ studying Physics next term; it's so interesting!

Could you spare .......................... minutes to help me change any tire?

I'm sorry I'm late for class. I couldn't find ......... free parking spaces.

Roger wasn't sure ……………….

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