,the party was pleasant.
--- Are you going to the concert tomorrow?--- ___________I’m not sure whether I could finish my paper before that.
The speech was wonderful ______ it lasted too long.
This old professor insisted that he _____energetic enough and that he _____.
__________ is always the husband who __________ first when a quarrel comes about between the young couple.
Scientists say it will be five or six years ________ it is possible to test this medicine on humans.