根据句意,用所给单词的适当形式填空。
1.It gives us much________(please)to welcome our new teacher.
2.We are looking forward to ________ (visit)Shanghai World Expo.
3.Thanks for your________ (invite).I'll be there on time.
4.This was one of the worst________ (nature)disasters in the history of the United States.
5.Students at school shouldn’t get their ears________ (pierce).
1.pleasure
2.visiting
3.invitation
4.natural
5.pierced