Đáp án: joined
Giải thích: last month => quá khứ đơn
Dịch: Tháng trước, tôi đã tham gia một khóa học để học cách làm đồ trang trí Giáng sinh.
He said that the lifestyle of his village has changed a lot for the last five years.
Entering the room, I was surprised at what I saw.
=> When ____________________________.
“Why don’t you put your luggage under the seat?, he asked.
=> He suggested ______________________.
She spends two hours (work) ______ part time at a supermarket near her house everyday.