Fill the correct present perfect or simple past form of the verb from the options given below:
I ______ an accident today. I don't know the man involved.
'Saw' which is in the simple past tense form is used to denote an action that occurred in the past. The given sentence indicates that the action happened in the past. Therefore option B. On the other hand, 'Has seen' which is in present perfect tense form is used to denote an action that was completed at some point in the past, especially something that was completed in the recent past.Whereas, ‘see’ would be an example of simple present tense, which is used to talk about general truths or actions that happen repeatedly in the present. Options A and C are incorrect because the sentence doesn’t speak about a general truth or statement, nor an action that was completed at some point in the recent past. 'Had seen’ is an example of past perfect tense. It is used to refer to something that happened at some point in the past before another action occurred. Option D cannot be used in the sentence because the verb ‘don’t know’ is an example of simple present tense. Past perfect tense needs both the actions to be in past tense for the sentence to make sense. Therefore option D is incorrect.