Although, it's raining, ____are still working in the fields.
Could you tell us ______ happens when one student in class expresses a personal opinion _______ maybe upsets other students?
. Let’s take _____ ten-minute break and have _______ drink of water.
He _______ us that everything would go according to plan, but it turned out a failure.
. His sister left home in 1998, and_______since.
. The weather in Beijing in winter is colder than_______ in Fuzhou.