21.Heall his important thoughts in his diary.
A. set out B. set down C. set about D. set aside
22. Laws that punish parents for their little children’s actions against the laws get parents_____ .
A. worried B. to worried C. worrying D. worry
23. ----Do you know our town at all?
----No, this is the first time I ____ here.
A. have come B. was C. came D. am coming