Trang chủ/Câu hỏi/What is the problem?Quay lạiClick meXem chi tiết bài testChia sẻWhat is the problem?Chọn một đáp ánCâu hỏi: What is the problem?AC. The meeting was a success.BD. A deadline has been changed.CB. A meeting had to be rescheduled.DA. The plane tickets were not booked.