请阅读下面对话,将适合的字词填入空格中: link wonder sensed clarify occur Failed Purchase M: The Online Store Customer Service Hotline. How may I help you? W: Hello, I just bought a product through your website, and I 1 _________ that there might have been a problem with my order because I never received a purchase confirmation. M: Let me 2 _________ that for you. May I have your name, please? W: Yes, it's Jane Caldwell. M: Is that C-A-L-D-W-E-L-L? W: That's correct. M: One moment please....... Ms. Caldwell, I don't see any purchase under your name. Did the problem 3 _________ when you keyed in your credit card information? W: No, that was OK. But, when I clicked the purchase button, my computer didn't 4 _________ to the final webpage, I 5 ________ whether it happened because I was using someone else's computer. M: Hmmm. . . that shouldn't be a problem. Let me check.