Questions

The phrase ‘could not be able’ needs to be replaced with ‘was not able’ to make the sentence correct. As the action has already taken place so use of modal is incorrect. Thus, the correct sentence would be, ‘She told her teacher that she was not able to attend the class the previous day because of heavy rains’.

Yellow and green color mix make a Lime color.

The three primary colors in additive mixing are red, green, and blue. In the absence of color or, when no colors are showing, the result is black. If all three primary colors are showing, the result is white. When red and green combine, the result is yellow. When red and blue combine, the result is magenta. When blue and green combine, the result is cyan.