A. The family took one-third of the toys to the donation center. is correct
B. one-half shouldn't be hyphened, should not be a hyphen there.
C. 0.25 should be written as one quarter or one-fourth
1. This movie is the best out of the two - I'm not sure it sounds right to me already
2. All the children were warned not to throw stones.
3. The box of blocks was dropped
4. My father, who built the library, was honoured (honored - I'm English I spell the English way) by the city.
5. We use our Spanish books on Tuesdays and Thursdays.