A. 标书要寄到下列地址，每套可回收人民币2，799元，标书文本不得更改。
B. 招标文件可在下列地址获取，每套文件为人民币2，799元，不可退换。
C. 可向下列地址索取招标文件，每套需支付人民币2，799元，恕不退款。
D. 到下列地点办理相关招标手续，交付人民币2，799元，标书不得更改。

A. he became a telegraph operator, a newsboy, and then got his first patent
B. he became a newsboy, got his first patent, and then became a telegraph operator
C. he got a patent, became a telegraph operator, and then became a newsboy
D. he became a newsboy, a telegraph operator, and then got a patent