Chuyển sang dạng câu khẳng định phủ định nghi vấn 1:his father(love)cats 2:they(listen)to music eveyday 3:his teacher(watch)tv twice a week 4:hoa(like)cooking 5:they(call)their parents last night 6:his parents(cook)meal at presents 7:they(be)doctor in 2030 8:lan(play)games next month 9:hoa(be)teacher in 1990 10:they(read)book at present