Fill in the blank with a suitable word

 Fill in the blank with a suitable word.
 I think Tet holiday is the (1)........... important celebration in Vietnam because it is an occasion for family-reunion, for human love and for better hope. All of (2)............. seem to forget the hatred, bad lucks and then try to be nice (3)............. others. Everyone is eager to take (4)............. in many special activities, which are expected to bring (5)............. lucks and success in the New Year. Tet is also the time for us to relax and enjoy our special foods, (6)............. atmosphere (7).............. a hard-working year.