he was investigating ways to improve the telescope, Newton made_______discover which completely changed______ man’s understanding of colour.

.My aunt got married ____ my uncle ten years ago.

Della likes dancing, but doesn’t like swimming —-_____

She has a gift for creating an atmosphere for her students_________allows them to communicate freely with each other

You got back so late and you didn’t even give me aproper reason _______ you hadn’t called me! I’m very unhappy with you.