第一句答案选 B （make comments on = 对 ··· 作评论） ；
Before we turn to that issue, I wish to make comments on your report = 在我们开始讨论这个问题之前,我想谈谈你的报告；
第二句答案选 A（refer to = 参考,涉及）；
He often refers to his notes while he is making a speech = 当他做演讲时,经常参考他的笔记.