1/ (-) he didn't drink milk at lan's party yesterday
(?) did he drink milk at lan's party yesterday?

2/ (-) She hasn't tought An french for 2 years
(?) has she tought An french for 2 years?

3/ (-) i have not worn red hat since sunday
(?) have i worn red hat since sunday?

4/ (-) i won't walk to school next week
(?) will i walk to school next week?

5/ (-) he wasn't watching tv at 8p.m last night
(?) was he watching tv at 8p.m last?

chúc bạn học tốt!!! =))