Are these apples? Yes, ____
---Have you seen Dr. Adams recently?---No. He __________ Hong Kong for an important meeting. He’ll come back tomorrow.
-- Has your sister come back? --Yes, she has. She______ back two days ago.
There __________great changes in our hometown in the past fifteen years.
-----________did your uncle leave his home town ?----He ___________for nearly twenty years.
It's very to play chess with old friends at home.