--- Jim took one-hour ride just now. What a short time he spent finishing such a long way!--- He is _____ experienced rider.
Why not ______ help when you were in danger?
Would you mind ______ louder? I can’t hear you clearly.
The movie is ______, and Joan is ______ in it.
---______ shells do you have? ---Over 100 so far.
---______ did you first skate? ---Two years ago.