Look at the list. Write sentences using present perfect and already or yet a 1/ do my homework b. x 1/have dinner c. x My brother/tidy his room d. My mother/feed the cat e. X My father/return from work

**Решение:** To form sentences using the present perfect tense with "already" or "yet", we consider the actions mentioned in the list. a. I have already done my homework. b. I haven't had dinner yet. c. My brother has already tidied his room. d. My mother has fed the cat already. e. My father hasn't returned from work yet. Explanation: - When using the present perfect with "already", it indicates that the action has been completed at a specific time in the past or before now. - When using the present perfect with "yet", it indicates that the action is expected to happen at some point up to now or continues up to the present. I hope this explanation helps you understand how to form sentences using the present perfect tense with "already" and "yet" based on the given list. If you have any further questions or need clarification, feel free to ask.