Every 40 minutes we will take a 20-minute break, ______ your guide will give a short talk on different aspect of the Great Wall.
--- What about inviting Mary to our party?--- You’d better not. She prefers to be ____, so far as I know.
It is not enough to have ____ for the disabled. We should learn to respect them and help them understand their valuable roles in society.
The young couple are always quarreling ____ family affairs, so it’s only a matter ____ time before they get divorced.
____, all the students passed the entrance examination.
When I was passing the town hall, I heard the clock ____ twelve.