Vietnamese wordkhông biếtIn your course · Chapter 24Part of speechverbLevelB1FrequencyNo. 573 in the course corpusMeaningsnot to knowSource: Tonada courseRelated wordsbuổi sángmorning (part of the day)sáng sớmearly in the morningbuổipart of the day (morning, afternoon, evening)bánh chưngsquare sticky rice cakebảng giờtimetablebảo rằngto say thatbếnstation; terminalbệnhillness; disease