Exploring the present perfect tense with 'just', 'already', and 'yet'

Learn about using the present perfect tense with 'just', 'already', and 'yet' in positive sentences, negative sentences, and questions. Understand the word order for 'just' and 'already' and where 'yet' fits in. Also, get a brief explanation of how to form the present perfect tense with a mention of the London Eye.