1. a. I hope to come up with a good idea for our summer vacation.
    b. Language understanding is not just going through a dictionary and coming up with a definition.
  2. a. As many as twenty thousand people joined the meeting.
    b. “Run," for example, can have as many as sixteen definitions in a rather small dictionary.
  3. a. A computer would need to be able to tell such a sentence from a real question.
    b. These two kinds of tea taste the same to me. Can you tell one from the other?
  4. a. Don’t take his kindness for granted.
    b. No one realized how much “intelligence" depended on things we take for granted.