He tried to make himself ________ by his students, but he failed.

.I know a little bit about Italy as my wife and I______ there several years ago

Were you at home at 7:00 yesterday evening I called you but no one was there. —Sorry, we ___________ a movie at the theatre at that time.

the test system, rather than the teachers,_______ is to blame for the students’ heavy burden nowadays.

Mr. Wu came into the classroom , abook in his hand.