When ____ comes to saving energy, big changes start with small steps, like turning off the lights.
---Who is the girl standing over there ?---Well , if you ___know , her name is Mabel .
Tom sat under a tree and seeing his friend, __ up in no time.
I saw him ______ at desk, reading.
I used to drink a lot of tea but these days I ______ coffee.
--- Did he notice you enter the room? --- I don’t think so. He ______ to the radio with his eyes shut.