----Where is my watch? I can’t find it.----Don’t worry. It must be ______ in your room.
---I have sore eyes. ---You _____ play computer games too long.
---My father is ill, I have to look after him at home. ---
There ______ a parents’ meeting tomorrow afternoon.
We should stop people from_____ the street when the light is red.
_______ necessary for us _______ English well.