Question

I regret________you that we are unable to help you.

—It doesn’t matter.Thank you all the same.

A．to tell                                                 B．telling 

C．at telling                                             B．for telling

Answer 1

A　句意为：“很遗憾地告诉你我们不能帮你。”“没关系，仍然应该谢谢你们。”regret to do sth.遗憾地去干某事；regret接不定式表示该动作还未做；若跟动名词则表示该动作已做过。