i am very happy to be here 为什么是to be here```用IS不行吗··是因为一个句子里不能出现两个be吗

I am very happy to have you! I am very happy to work here I am very happy i am very happy to have chance to be I am feeling very happy I am very happy to have you with me I am very happy to meet you Thank you Darling .I am very happy to be your wife . I am very happy because i can enjoy doing _____iLove to do A what B that 应该选什么呢 I am very happy 对very happy 提问 Baby,you must be very very happy.I am willing with mine all,to trade you to be happy! 英语翻译I want to let you know that I am very happy to get your email. 英语翻译have you,i am very happy I am very happy this holiday. i am very happy today句子成分划分 Have you,I am very happy i am very happy with you I AM VERY HAPPY BEAUSE FOR YOU