The room is not bright enough. I need to _______ a light in the room.

Hi, John. Do you know Mary–Yes. The girl red is Mary.

They are _____little children that you can’t look after ____many by yourself at the same time.

Tom realized that he ________ his physicsbook at home when he reached school．

The sooner we students___to the new school, the better it will be___our studies.