下列各句中，没有语病的一句是（ ）

Showing ______ to a current or formerteacher is a fair reward and an act of gratitude that will also make you feelbetter.

The number of cars very small in the parking lot, which means only a small number of people the meeting.

Did you hear about the hero who rescued the childfrom the burning building—-Yes What do you think most people ______ if theywere in a similar situation

The old photo reminded me of the happy hours_____ we spent together.