Josh all day yesterday. (past) a. was watching b. will watch c. will have watched d. watched

The best answer among the following choices to fill in the blank would be the fourth option D) because the word watched is used to show that josh already watch t.v. yesterday so he already did it.

"Watched" Answer Choice D.

Explanation:

Now let's talk about the verbs and their tense,

"Was Watching" ending in "ING" means currently happening Well we know he was watching it yesterday not today so We eliminate answer choice A."Will watch" is a future tense, To happen Once again, He watched it yesterday so this is also incorrect, Both A,B are incorrect, "Will have watched" Ending in "Ed" is of Past Tense something that has already happened Now, He was watching TV yesterday so this a possible answer, So C is the possible correct answer."Watched" ending in "Ed" as well, Past Tense, Happened yesterday, But we also have C which ends in past tense, So let's look more into it."Will have watched" Now, Although it ends in "Ed" (Past Tense) it has "Will have" (Future Tense) So, this we know already happened and is not to happen in the Future.So thus Eliminating answer choice C, You're left with D as the only possible answer.D is the correct response.(Edit :  .Now I hope this has helped you, Have a wonder-ful day!...End Edit)