CHIA DẠNG ĐÚNG CỦA ĐỘNG TỪ :
1.By the age of 25, he (write).....two famous novels
2.While her husband was in the army, mary (write)......to him twice a week
TÌM LỖI SAI
After Mrs.Wang had returned to her house from work, she was cooking dinner
They are going to have to leave soon and so...