B: That’s true but we will look at our budget first before planning anything grand.
A: I have came up with a wonderful idea already. To cut costs, we *have had our own college band to perform at our graduation.
*我用(have had)是因為,我認為這個our own college band是一直都存在的,不是將會有的,所以我沒用future tense ,可是也錯了.
更新1:
我可以理解jacaranda所講的道理,但答案是nowai_xy說的那一個。 所以,我還是不明白為什麼用will have
更新2:
你們倆都針對perform來用tense,而我是對our own college band來用的。 我的問題在哪?