Degree construction: "too … to …" with an infinitive expressing inability Complete the sentence using the correct infinitive phrase: "He is too dull ______ this problem." Choose the option that completes the standard "too … to …" structure.

Given data

• Pattern: "too + adjective + _____ + object".
• Intended meaning: insufficient ability to do something.

Concept/ApproachThe correct construction is "too + adjective + to + verb": "too dull to solve this problem."

Option analysisto solve — correct infinitive form. ✅to solving — incorrect; gerund cannot follow "too".for solving / for solve — wrong after "too + adjective".

Final Answerto solve