Usage Examples Present Perfect vs. Present Perfect Continuous

• My sister has not come back yet. -
• Julie has been working on this report since eight am. -
• Has Ruth ever cooked for you? -
• I haven't seen Lisa today. -
• I have never had a pet. -
• Has your cousin graduated from the university yet? -
• You are all sweaty! What have you been doing? -
• Has Max been exercising lately? He looks great! -
• Who have you been talking to for an hour? -
• Have you ever met Helen? -
• Grandma has been cooking all day. -
• Mary and Jane have been travelling since July. -
• Mary has been to Canada twice. -
• They have been waiting for us for thirty minutes. -
• Luke has written four books. -
• I've been reading the book you gave me for two weeks. -
• Has your mother been jogging? She looks fit! -
• They have been studying philosophy for five years. -
• Ann hasn't read this paper yet. -
• Have you been reading this paper for two hours? -