Question

She felled down the hill because her walk boots were not tied tightly
2. She fell down hill because her walking boots weren’t tied tight
3. She fell down the hill because her walking boots were not tied tightly
4. She fallen down the hill because her walked boot were not tied tigh

Answer 1

I think it's option three

Answer 2

3. she fell down the hill because her walking boots were not tied tightly. will be the answer.

HOPE IT HELPS...!!
@Mansi