根据所给提示，完成句子。每空一词，含缩略词。
小题1:He read the book several times.(改为否定句)
He __________ ________the book several times.
小题2:I got a letter from my pen pal last week.(同义句转换)
I ________ _________ my pen pal last week.
小题3:The teacher called Nancy is under the tree.(对划线部分提问)
__________ ________ the teacher called Nancy?
小题4:你最好7点准时到这儿。(完成译句)
You _______ ________ arrive here at 07:00.