They are talking _______ they were old friends.
The boss _______ company I worked in two years ago has ______ in solving such kind of problem.
When you are in a foreign country, you may miss ______ Chinese food a lot. As a result, you hope to have ______ big supper after a tiring day.
I should not have laughed if I _________ you were serious.
On the Eve of the Spring Festival, we Chinese people like to play with fireworks, and the noise doesn’t ________ until after midnight.
The children, ________ had played the whole day long, were worn out.