根据所给提示，完成句子。每空一词，含缩略词。
He did his homework last night. (改为否定句)
He __________ __________ his homework last night.
The kid is playing the piano at the school music club. (对划线部分提问)
__________ is the kid __________ the piano?
Visitors love this city because it has historical sights and delicious food. (改为同义句)
Visitors love this city __________ _________ its historical sights and delicious food.
他两个月没有收到他儿子的信了。(完成译句)
He hasn’t ________ ________ his son for two months.