Grammar Check: Correct Verb Forms

This question requires identifying grammatically correct sentences based on the correct usage of the verb 'wake up'. We need to examine the verb forms in each sentence.

Sentence Analysis

• Sentence (i): "I woke up from sleep." - Here, "woke" is the simple past tense of the verb "wake". This form is correct for describing a past action.
• Sentence (ii): "I woked up from sleep." - The word "woked" is not a standard English past tense form of "wake". The correct simple past tense is "woke". Therefore, this sentence is grammatically incorrect.
• Sentence (iii): "I was woken up from sleep." - This sentence uses the passive voice. "Woken" is the correct past participle of "wake". The structure "was woken" is the correct passive form. This sentence is grammatically correct.
• Sentence (iv): "I was wokened up from sleep." - The word "wokened" is not the correct past participle form of "wake". The correct past participle is "woken". Therefore, this sentence is grammatically incorrect.

Conclusion

Based on the analysis, sentences (i) and (iii) use the correct verb forms for the context (simple past and passive voice, respectively). Sentences (ii) and (iv) use incorrect verb forms.

Therefore, the grammatically CORRECT sentences are (i) and (iii).