C.<span>"He looked for a long time at the envelope, the writing on which he did not know, not daring to open it, not wishing to read it, with a wild desire to put it in his pocket and say to himself: 'I'll leave that till to-morrow, when I'm far away!'"</span>
For number 1, your option is correct (B). "Doggedly" is synonymous with "persistent," so "with great determination" matches that.
For number 2, your option is correct (D). "Stoutly" means "strong" and "sturdy," so "solid" would also work.
For number 3, your option is incorrect. The correct answer is B. "Boisterous" and "rowdy" both mean energetic and noisy. Since the children were bouncing off the walls, they were indeed energetic, boisterous, and rowdy.
The root word is movable because it can stand on it's on as a word, while "im" can not.
