The _______look on his face shows that he’s greatly ___________.
There is a common saying in China nothing in the world is difficult for one who sets his mind to it.
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
The audience who come to the live broadcast scene are always chosen ______ in order to be fair.
Our teacher recommended us so useful a grammar book ______ we can make use of while studying English.
—Next Monday is my birthday. —Is that so? ______