----Do you really insist on going out to watch the football game? ---- I know it may rain. ______, I shall go out, nothing can stop me.

 Process has been very smooth. ______, we are not confident that it will be completed on time.

David apologized to me yesterday. __, I won't forgive him for it was not the first time that he had hurt me.

The guide showed the travelers _____ of the factory.

—Why are you so late?—The driver couldn’t see clearly because of the fog．____, the road was too icy．