-Why is Tom so worried?-Because he doesn't know _his shop.
Great men never give up ___ difficulty.
It is ___ great pleasure for me to be praised in public.
The children put on ___ one-act play last Saturday. ___ play amused everyone of us.
When our teacher comes into the room. We greet him with __ “Good morning.”
Suddenly ___ fire broke out in his house and the neighbours immediately, tried to put out ___ fire.