Usage Examples Present Perfect vs. Present Perfect Continuous

• I've been reading the book you gave me for two weeks. -
• Charles has been teaching at the university since August. -
• Why have we been waiting for her for forty minutes? -
• I have already done my homework . -
• Julie has been working on this report since eight am. -
• Has Ruth ever cooked for you? -
• My sister has not come back yet. -
• I haven't seen Lisa today. -
• Has your cousin graduated from the university yet? -
• I have already cooked the dinner. -
• How many pages have you written today? -
• Recently Josh hasn't been doing the work. -
• Who have you been talking to for an hour? -
• Where have I left my bag? -
• Ann hasn't read this paper yet. -
• There has been an accident. -
• I've seen the film you recommened me. -
• Mary and Jane have been travelling since July. -
• Have you ever met Helen? -
• Luke has written four books. -