Question

Fill in the gaps with the correct Past Simple or Present Simple forms of the verbs in brackets. 1)Long ago, artists ... ( to make) the camera obscura. The camera obscura ... ( to be ) a small, dark room with a hole in one wall. In this room light ... ( to go) through the hole and a picture ... ( to appear) on the wall opposite the hole. 2) Nowadays, when we ... ( to press) the button on top of a modern camera, the shutter ... ( to open). The light ... ( to go) through the lens and the film ... ( to record) the picture.

Answer 1

1) Long ago, artists made the camera obscura. The camera obscura was a small, dark room with a hole in one wall. In this room light went through the hole and a picture appeared on the wall opposite the hole. 
2) Nowadays, when we press the button on top of a modern camera, the shutter opens. The light goes through the lens and the film is recorded the picture.