(Originais Teachy 2023) - Question Very Easy of Spanish

Identify and explain the rule of using the letter 'h' in Portuguese words that start with this grapheme, considering both words with silent 'h' and words with 'h' followed by a vowel. Also, discuss the historical origin of the presence of this letter in the Portuguese language and its role in faithfully representing the etymology of words. To exemplify, mention 5 words with silent 'h' and 5 words with 'h' followed by a vowel, explaining the particularities of each group regarding pronunciation and the use of 'h'.

In the Portuguese language, words are composed of syllables, which are sound units formed by vowels, alone or accompanied by consonants. The correct separation of syllables is essential for understanding spelling and reading. Considering the word 'combustível', which is of utmost importance in studies on the environment and sustainability, identify how many syllables are in this word and justify the syllable division according to the grammatical rules. Relate the concept of syllable to the importance of environmental preservation that the conscious use of fuels exemplifies.

In a conversation between two friends, one of them says: 'Do you remember that restaurant we went to last year? The waiter who served us was very friendly!'. In the context of this conversation, what reference element is present in the friend's speech when referring to the waiter?