Abstract: The current study investigates the types of speaking tasks used in grade 11 classes at Le Quy Don Gifted High School. The data of research were collected by means of classroom observations, questionnaires and interviews. The teachers' use of tasks was documented through classroom observations and their difficulties in tasks implementation were explored through questionnaires and interviews. The data were analyzed quantitatively and qualitatively. The overall findings show that the commonly used tasks are 'ask and answer questions', 'work in pairs to make a dialogue', 'talk about personal experiences', and 'arrange information'. Additionally, the teachers reported large class sizes, students' low confidence, students' mixed proficiency level as major obstacles in their task implementation.. Keywords: Tasks, speaking skills.