Answer:
Turner was afraid.
Step-by-step explanation:
Based on Turner's reaction to Mr Stonecrop, it can be inferred that Turner was afraid of Mr Stonecrop.
"But when he looked up into Mr. Stonecrop's face, he shuddered. Mr. Stonecrop was laughing, and his mouth was pulled into a grin, but his eyes were as dead as marbles..."
This excerpt supports the idea that Turner was afraid of Mr Stonecrop because of his mirthless grin and sheer size.