Hey there!
There's a special rule in Spanish when a noun ends with a z. When you make it plural, it does not end with a traditional -os or -as. It ends with -ces. For example, pez turns to peces, and so on.
Therefore, your answer would be "Los lapices".
Hope this helps!
1. Trates
2. Consumas
3. Vayas
4. Piense
5. Pueda
6. A hacer
7. Salgas
8. Te duermas
9. Decidan
10. Escriba
-el frío (the cold)
-la lluvia (the rain)
-los gusanos (the bugs)
hope this helps :)