21.Her son,to whom she was so_____,went abroad ten years ago.
A.concerned B.cared C.devoted D.loved
22.If a person has not had enough sleep,his actions will give him ___ during the day.
A.out B.up C.in D.away
23.You can imagine what great tuouble we had_____ the school for the blind.
A.setting up B.to set up C.set up D.to setting up
