Infinitive without to and with to

I heard someone .....(say) "yes"

He used a knife .....(open) the box becaused he didn't have any scissors.

I'm confused. I don't know what .....(do)

My friend let me ......(borrow) his toy car. He's really nice to me.

My mom makes me......(do) the chores everyday. She thinks it's important for kids to help around the house.

I hope .....(study) in a good university when I grow up.

I'm not sure where ......(put) this chair.

This door is broken. I don't know how.....(fix) that.

Is it okay .......(tell) mom the truth? I broke her favorite vase.

I heard someone .......(open) the window.

Do you know how .....(make) pizza? I really love Italian food.

This homework is really easy .....(do). It took me only 10 minutes to finish.

I heard someone ......(kick) a ball.

I heard someone .......(drop) a plate.