Choose the word whose main stress is placed differently from the others in each group

My mother thought she might run out of cash, so she took her cheque-book with her. (case)

→ My mother took her cheque-book with her ______________ out of cash.

We've been having (A) a little (B) problems (C) with the (D) new computer.

My bicycle needs to be repaired soon. (must)

→ I really ________________________________________ repaired soon.

I drink some cups of tea, have a quick breakfast and then lead the buffalo to the field.

She's decided to go _______ business as a freelance computer programmer.

You couldn’t have been successful without her help. (she)

→ You couldn’t ____________________________________________ her.

I continue to work from a quarter past eight till 10.30.