Here are the correct answers for each sentence:

11. My bank manager advised D. me to take out.
(Explanation: "advise someone to do something" is the correct structure.)


12. I must go now; I promised B. not to be.
(Explanation: "I promised not to be late" follows the correct grammatical structure.)


13. The children are looking forward B. to seeing.
(Explanation: "look forward to" is always followed by a gerund.)


14. I don't mind B. walking - to get.
(Explanation: "I don't mind walking" and "to get" is a correct structure.)


15. How was your trip to Vietnam after 10 years?
A. Amazing! I couldn’t believe how much it has changed!
(Explanation: This is an appropriate response expressing surprise and excitement about the changes.)



Let me know if you need further clarification!