Choose the future perfect, second person plural form of to have. you will have we will have you will have had they will have had

OK, so you know 1st person is I, Me, My so go ahead and exclude anything that is 1st person (none here).

Second person is You.

Third person is he, she, him, her, that person etc. (none here)

First person plural would be WE. (exclude any with we)

Second person plural would be you, you all.

Third person plural would be they, them, those. (exclude they)

So, that narrows it down to 2 options.

The future perfect verb tense is used for actions that will be completed before some other point in the future. Future tense describes something that happens in the future but is on going. (Here's a trick of sorts- both types are in the future but future perfect means you know it turned out perfectly  so that means you knew what the outcome was, thus it must be over at some point)

"...will have" is an action that is in the future.

"...will have had" is a future action that will end.

Hopefully this will direct you to the correct answer.

you will have had

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recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

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