— I called you yesterday evening, but no one answered.      — I ______in my bedroom at that time. 

—      Peter come to see us?—I think he will come if he        not busy.

My parents and I _______ abroad last year.

 -- Where is Paul, do you know?-- He ________ the library. He won’t return until nine.

Yesterday, the teacher told us that the earth ________around the sun.