根据汉语提示或首字母填空
1．It is a great h________ for me to be able to attend this gathering.
2．Please give him my ________(祝贺) when you see him.
3．You can't j________ a book by its cover.
4．Please accept my s________ thanks and best wishes.
5．Learning to e________ oneself well is an important part of communication.
