Correct Answer: I should secure some company for my lonely hours.

Solution : The fourth option is the correct choice.

• In the first sentence , the incorrect spellings are "sicure" and "lonelie". The correct spellings are "secure" and "lonely".
• In the second sentence , the incorrect spellings are "secur" and "loneley". The correct spellings are "secure" and "lonely".
• In the third sentence , the incorrect spelling is "secore". The correct spelling is "secure".
• In the fourth sentence, there is no error.

Therefore, the correct sentence is: "I should secure some company for my lonely hours."