I will be very happy if he _____ write to me.A.must B.will C.ought D.has to为什么?这里难道不应该用主将从现吗？will可以用在虚拟中吗？

I will be very happy with I will be very happy with you中文翻译 I'm sure you will be very happy As long as you smile.I will be very happy. i will be very happy i have some time to do things i like to do. I think I will be very happy!为何要加be?可以不用be?在语法书哪里? i will be happy 为什么加be come on ,I hope we will be very happy 怎么翻译 I'm sure they will be very happy.句子结构 .为什么要用THEY I'm sure grandpa will be very happy ____(see) us you must be very happy I believe you will go and she has been Taotao you must be very happy I believe you will go and she has been Whenever I see you, I will be very happy very excited, but please wait for me 什么意思? we are sure will be very happy very I want to be happy very much. I will be very hard i will be very happy i have some time to do the things i like to do.中间填什么 英语翻译i will be very very appreciate.