然后以最正式的方式，將信封塞到了老人的嘴里

然后以最正式的方式，將信封塞到了老人的嘴里

Results (English) 1:

Then in the most formal way, he stuffed the envelope into the old man’s mouth

Results (English) 2:

Then, in the most formal way, the envelope was put into the old man's mouth

Results (English) 3:

Then in the most formal way, the envelope was stuffed into the old man's mouth