The study of lexicon is essential for expanding vocabulary and understanding texts in English, as it helps identify the meaning of words in different contexts. Choose the correct alternative about the use of words in English.

Syntactic analysis is essential to understand the function of words in a sentence and the correct structure of sentences in English. Choose the correct alternative about the syntactic analysis of the sentence: "The boy is reading a book in the library." 

Word classes in English, such as nouns, verbs, and adjectives, play specific roles in sentence construction and must be correctly identified to ensure grammatical accuracy. Regarding the topic, mark T for true statements and F for false ones.

(__)Adjectives in English are always positioned after the noun they modify.
(__)Adverbs can modify verbs, adjectives, or other adverbs.
(__)Proper nouns in English always start with a capital letter.
(__)Verbs in the infinitive form in English are preceded by the particle to, except in some specific cases.

The correct sequence is: