Question

I ________ to the back lawn to pick a kite that had fallen there.( go)​

Answer 1

Answer:

Gone

EDIT:

so sorry answer will be went

Explanation:

Because seeing the sentence we get to know that tense used in this is past perfect so Verb's 3rd form will be used,

EDIT:

Because there are 2 sentences connected with 'to'. first one is in past indefinite and second one is in past perfect so in 2 fallen is used, and in 1 went will be used.

Answer 2

I ________ to the back lawn to pick a kite that had fallen there.

Answer:

Went is a simple past tense of go.

We are talking about an action that had already been done, so the correct answer is Went.

Remember, there is no word called "back lawn", the word related to this maybe Backyard.

Final result:

I Went to the backyard to pick a kite that had fallen there.