You’ve been playing racquetball with a friend every week. When you started, you weren’t very good. Now you just scored a point against your friend and she compliments you. You say:
I think I’m improving little by little.
ability, idioms, improvement, sports, 日本語サポート 
Your husband lost his job, so you don't have enough money to pay for your home loan. Now you're trying to sell your house. You explain why you're selling it to a potential buyer:
We're no longer able to afford the mortgage payments.
ability, afford, home (topic), loan, money, real estate, selling, stative verb 
Earlier today, you were writing a resume for applying for a job. While you were writing, the computer program shut down and you were worried that your file would be lost. Now you're telling a friend about what happened. You say:
Word crashed while I was working on it, but luckily I was able to retrieve the file.
You're going for a run with a friend of yours who's a strong runner. He's running to fast, and you don't think you'll be able to continue running that fast for the entire time. You say:
I don't think I can keep up this pace.
