---I find the more we study, the more difficulty we have ________ out Maths problems.---Oh, I agree with you. Maths is more and more difficult.
He had to _________in hospital ________he was better.
- How can you manage to do all these things without a rest? -I prefer_______ a cup of coffee_______ me energetic.
Tomorrow is my_______ birthday, I promise to take on more challenges in my_______.
The thing that_____ is not whether you fail or not, but whether you try or not.
- Let's go on a picnic if it_______ next Saturday. - But nobody knows if it_______ on that day.