I stopped the car ________ a short break as I was feeling tired.

Could you please give me some advice ____ studying English.

Oh， there’s someone knocking at the door.—_______ must be that naughty boy.

Words don’t have the power to hurt you, _______ the person who said them means a lot to you

Suddenly, they heard ______ whisper from the bushes behind _______tree on the left.