-Do you know______ man in white? -Oh, he is_________ scientist from America.
Here we are at the science museum. Let’s _______.
I still remembered we arrived _______ that small village _______ a clear night.
— Everyone knows Canada is the second _______ country in the world.— That is, it is larger than _______ country in Asia.
— Excuse me, _______ is it from here to the World Park?— About half an hour by underground.
Amy is glad to help others _______, so we often ask her for help.