Choose the suitable prepositions to complete the sentences.

Choose the correct option.

Next month I want to start my career [at|by|in|of|under|over] video blogging.

How can you be so effective working [at|by|in|of|under|over] pressure?

Who's in charge [at|by|in|of|under|over] this school project?

[At|By|In|Of|Under|Over] the beginning of the lesson everyone got a piece of paper.

Hugo'll have finished the task [at|by|in|of|under|over] the end of the day.