Because you are a valued and dedicated employee,we are __________you to direct
or the development.
答案是promoting
请问为何要用Ving呢？
不能用原形动词吗...？

beV + Ving是进行式，这题是用现在进行式表未来将发生的事件，行程。E.g. He is coming to my party.意思是“他会出席我的派对”，简单的句子较好理解