Here are the answers to the questions based on the information provided:
- Our experiment failed so we are B. back to square one.
- There was a rumor in class that one class officer was A. in cahoots with a group of cheaters during the examination.
- I bid goodbye to my classmates with D. lump in your throat.
- As a transferee for this pandemic school year, I felt like A. a fish out of water.
- The improvement of the sentence would be A. While lecturing on artificial intelligence, she saw that the audience was all ears. (It provides clarity on who is lecturing.)
- Kids are B. fond of Minecraft.
- Naschielle was born A. on the 15th of February.
- The continuing professional development seminar on inclusive education for professional teachers will commence A. on March.
- For adventure, the teacher excursionists drove D. through the tunnel.
Feel free to reach out if you have more questions or need further clarification!