I haven't seen Lisa today. -
Who have you been talking to for an hour? -
Mary has been to Canada twice. -
Recently Josh hasn't been doing the work. -
My sister has not come back yet. -
They have been waiting for us for thirty minutes. -
Grandma has been cooking all day. -
You are all sweaty! What have you been doing? -
I have never had a pet. -
They have never met Alex. -
Have you been reading this paper for two hours? -
Have you ever met Helen? -
Jack has been decorating the house all summer. -
How many pages have you written today? -
Where have I left my bag? -
How long has Nataly been calling you? -
Mary and Jane have been travelling since July. -
I have just left my job. -
Has Ruth ever cooked for you? -
Erica has not been listening to you all this time. -