She was just about to explain ___ she hadn't passed her maths test chiefly out of carelessness ___ her uncle came.
Of all the girls, Jane spent_________time and made_________mistakes.
How_________I help them to understand when they won’t listen to me?
The film is very humorous but_________can be enjoyed unless you understand English culture.
—Your composition is full of mistakes. —I wish I _________more careful.
._________life began on the earth is one of the biggest puzzles to scientists.