—What were you trying to prove to the police? —______I was last night .
While playing ping-pong, our eyes see the ball coming, judge its speed and then hit it back ________ it should go.
I was about to leave my house________the phone rang.
.________they were singing, the teacher came in.
All that can be eaten _______ eaten up.
I can never forget the day _______ we worked together and the day ______ we spent together.