Study and teaching -- English speakers 15 English language -- 12 Foreign speakers 11 Chinese language -- 10 English 8 Textbooks for foreign speakers -- 8 more ... French language -- 7 Grammar -- 7 Chinese Language -- 6 Grammar 5 Interactive multimedia 5 Study and teaching 5 English speakers -- 4 Arabic language -- 3 Self-instruction 3 Self-instruction -- 3 Sound recordings for English speakers 3 Chinese characters 2 Computer asisted instruction for foreign speakers 2 Computer assisted instruction for foreign speakers -- 2 Conversation 2 Englsih -- 2 Problems, exercises, etc 2 Spanish language -- 2 Textbooks for foreign speakers 2 vocabularies 2 Audio-visual aids 1 Audio-visual aids -- 1 Computer network resources 1 less ...