Choose the correct question in present perfect continuous. Study the example. Example: Correct: How long has John been learning English? Incorrect: How long have John been learning English? (We use 'has' with 'he') Incorrect: How long has Boris been learnning English? (We don't double the letter 'n' when adding -ing) 1. Has Eric been paintting the house? Has Eric been painting the house? Have Eric been painting the house? 2. Has they been planting trees? Have they been planting trees? Have they planted trees? 3. Has Andrea been talking on the phone? Has Andrea been tallking on the phone? Have Andrea been talking on the phone?