— I’m afraid I won’t be able to get to the top of the mountain. It’s hard for me.— Keep on! I’m sure you have a strong _________.
Let’s stop _______ a rest. I am so tired.
We must do everything what we can _______ water and paper.
My sister got a beautiful present on her ________ birthday.
It's a good idea ______ breakfast every day.
Look at the new words. Please ______ in your notebook.