Answer:
43: The landlady asked if I had enough lunch.
44: Mary asked John to not tell anyone her new address.
45: The notice said that breakfast would not be served after 9.30.
46: I asked where the best place was to buy souvenirs.
47: She reminded me to bring my passport with me the following day.
48: The teacher told the boys to not write on the wall.
49: The interviewer asked Mr. Simpson how many jobs he had since 2000.
50: The officer wanted to know why the frightened witness did not report the incident to the police.
Step-by-step explanation:
Just remember to avoid being redundant while converting the structure of the sentence, for instance in #47, "reminded me to not forget" becomes repetitive since they both have same meanings!