Học từ vựng English Vocabulary in Use Upper-intermediate
Unit 84: Words that only occur in the plural

STT	Bài học	Số câu hỏi	Audio
1	Vocabulary	1	No audio
2	Exercise - 84.1	1	No audio
3	Exercise - 84.2	7	No audio
4	Exercise - 84.3	6	No audio
5	Exercise - 84.4	8	No audio
6	Exercise - 84.5	3	No audio
7	Exercise - 84.6	1	No audio

Unit 83: Uncountable nouns

Unit 85: Countable and uncountable nouns with different meanings