The document discusses Krashen's five proposals on language learning and their validity in Libyan EFL classes. It summarizes Krashen's proposals which include: 1) the distinction between language learning and acquisition, 2) the natural order hypothesis which states that language structures are acquired in a predictable order, 3) the monitor hypothesis which describes three types of language users, 4) the input hypothesis which argues that language is acquired through comprehensible input, and 5) the affective filter hypothesis which posits that learners with high motivation and self-confidence acquire language more readily. The document analyzes how these proposals can be adapted to better suit foreign language learning contexts.