Kenya matshwao a lokelang a puo moo ho lokelang temeng e latelang:

The instruction "Kenya matshwao a lokelang a puo moo ho lokelang temeng e latelang:" means "Insert the correct punctuation marks where necessary in the following passage:".

The original sentence is "Ha mariha a kena batho ba rema difate kaha patsi e theko e phahameng."
This sentence contains an introductory clause "Ha mariha a kena" (When winter comes). A comma should separate this clause from the main part of the sentence. A period is needed at the end.
Ha mariha a kena, batho ba rema difate kaha patsi e theko e phahameng.

The original sentence is "Ba a lebala hore difate di na le melemo e mengata maphelong a rona."
This is a complete statement. A period is needed at the end.
Ba a lebala hore difate di na le melemo e mengata maphelong a rona.

The original sentence is "Melemo e meng ke e latelang ho etsa fenishara ho etsa dikepe ho thibela kgohleho ya mobu jj."
This sentence introduces a list of benefits. A colon should follow "e latelang" (the following) to introduce the list. The items in the list ("ho etsa fenishara", "ho etsa dikepe", "ho thibela kgohleho ya mobu") should be separated by commas. "jj." (joalo-joalo, meaning etc.) also needs a comma before it if it's part of the list, and a period at the end of the sentence.
Melemo e meng ke e latelang: ho etsa fenishara, ho etsa dikepe, ho thibela kgohleho ya mobu, jj.

The original sentence is "Ntatemohoholo o ile a re ho rona ha le rema difate kajeno le tla di hloka ka moso."
This sentence contains reported speech. A comma should separate the introductory phrase "Ntatemohoholo o ile a re ho rona" (Grandfather said to us) from the reported statement. A period is needed at the end.
Ntatemohoholo o ile a re ho rona, ha le rema difate kajeno le tla di hloka ka moso.

Here is the complete passage with the correct punctuation:

Ha mariha a kena, batho ba rema difate kaha patsi e theko e phahameng. Ba a lebala hore difate di na le melemo e mengata maphelong a rona. Melemo e meng ke e latelang: ho etsa fenishara, ho etsa dikepe, ho thibela kgohleho ya mobu, jj. Ntatemohoholo o ile a re ho rona, ha le rema difate kajeno le tla di hloka ka moso.