The above question seeks to assess your ability to understand contexts and create situations based on images. In that case, it's not right for me to write this answer for you, but I'll show you how you can write it.
To answer your question you must:
Observe all the images and the elements that make them up.
Observe the contexts within each image.
Write sentences for the balloons that fit within that context and that are consistent with what the characters are doing.
The first image, for example, shows a man speaking something. In this case, you can write the beginning of the speech, where the man thanks for the opportunity he is getting.
