In the evening, Sam usually ______________ to music in his room. But today he ______________ at a soup kitchen.Đoạn văn5/45Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. In the evening, Sam usually ______________ to music in his room. But today he ______________ at a soup kitchen. is listening/ volunteerslistens/ is volunteeringlistens/ volunteersis listening/ is volunteeringGiải thíchChọn B