--- Would you like to _____ Professor Smith’s lecture this Sunday?--- Sorry, I have an important meeting to _______.
.The _________ look on his face suggested that he hadn’t expected _________ would happen.
There is no _________ that the Great Wall of China is one of the biggest man-made projects on the earth.
.They _________ in spite of the extremely difficult conditions.
The old movie reminded them _________ the wonderful time they had spent together.
.He keeps on with physical training in winter _________ cold it is.