Based on the questions of second language teachers concerning classroom practice, generated by mail survey in 1983, research on aspects of second language teaching and learning was reviewed and is summarized here. In each case, a question or questions are posed and a brief discussion follows, in layman's language and based on relevant research, with a brief bibliography. Questions address these issues: factors in foreign language enrollment and attrition; language learner motivation; foreign language aptitude; brain hemisphere research; treatment of errors in oral language activities; importance and methods vocabulary development; role of and methodology for grammar instruction; encouraging oral-aural skills; materials and methods for introductory reading instruction; cultural awareness; literature instruction; teaching multilevel classes; grouping techniques; pacing and time factors in language learning; language of instruction; comparing and selecting teaching methods; class size; foreign language study and standardized test performance; and foreign languages and careers. A list of selected specific questions and teacher concerns is appended. (MSE)