1 . Alcohol is known to be ___________ to humans in large quantities, while proper amount of it is __________ and won’t do harm to people. (harm) (所给词的适当形式填空)

2 . Mary had got everything ready,__________ to do it well. Her ___________and good performance left a deep impression on us.(determine) (所给词的适当形式填空)

3 . ________(relief), I sat back in an easy chair and fell asleep. (所给词的适当形式填空)

4 . The meeting is at ________ (convenient) time for me; I’m afraid I can’t come. (所给词的适当形式填空)

5 . It is also a virtue to forgive and forget, especially in such a competitive and _______________(stress) society. (所给词的适当形式填空)