The letter 't' is one of the most common consonants in English. Since the word ends with 'e', there are many common word patterns that contain 't' such as words ending in '-te' (like 'write', 'state', 'quote'). Additionally, 't' frequently appears in other positions in words ending with 'e'. Since I've already tried two vowels ('a' and 'e'), guessing a high-frequency consonant like 't' gives me a good chance of revealing more of the word.