What is the tastiest food you have ever tried? -
There has been an accident. -
Charles has been teaching at the university since August. -
I have just left my job. -
Has Ruth ever cooked for you? -
Has Max been exercising lately? He looks great! -
They have never met Alex. -
Grandma has been cooking all day. -
What countries has John ever been to? -
How many pages have you written today? -
Have they ever been to Scotland? -
Who have you been talking to for an hour? -
Where have I left my bag? -
Mary has been to Canada twice. -
Have you been reading this paper for two hours? -
Ann hasn't read this paper yet. -
You are all sweaty! What have you been doing? -
Why have we been waiting for her for forty minutes? -
They have been waiting for us for thirty minutes. -
I haven't been swimming since May. -