如何使用 "s/he" 造句

1. A year had passed since s had friended me .
距离s加我好友已经一年了。
2. S had closed it tight .
s把门关得紧紧的。
3. The nexus s would just die .
换做nexuss,早就没电了。
4. Eventually s quit the magazine .
最后s在报社辞职了。
5. P 4 s 3 also ignites easily by friction .
p4s3在摩擦力作用下同样很容易引燃。