The problem is _____ difficult for me _____ solve

I was so excited last night that it was a long time _____I got to sleep.[ ]

If you have a chance to studyabroad, you mustcatch it and remember “Change always ______ about new possibilities.”

What did you do on April Fool’s Day — I played a trick _______ my brother.

Which song do you like better, Lucy—I prefer the song Little Apple ________ can attract many people.