You have responsibility ______ clearing up the room after class.
_____with what they had done, we felt we still had too much to do.
Nanjing is an old city, which ___the Changjiang River.
Be careful how you _____ that jug, it will break very easily.
We suddenly saw the bus about to leave and had to run _____ to catch it.
I think it is a top priority for the government to furnish the children with ___to the information superhighway.