1. toys of this kind don't help children learn while playing
do toys of this kind help children learn while playing?
2, dolls of wood, clay and wax were not also very popular with girls
WEre dolls of wood, clay and wax also very popular with girls?
3. Both boys and girls didn't love their rocking horses, and teddy bears.
Did Both boys and girls love their rocking horses, and teddy bears?
4. Things for children from poor families were not different.
Were things for children from poor families different?