4. Thank you for the present. What a _____ surprise! a nice b disgusting c lovely

The adjective that does NOT fit in sentence 4 is b disgusting.

Explanation: When thanking someone for a present, the surprise is typically expected to be positive. 'Nice' and 'lovely' are positive adjectives that fit the context of gratitude. 'Disgusting' is a negative adjective and would not be used in this context.

Answer: b disgusting