Both of these questions can be answered with one word. If that happens, there are usually two approaches. First, leave the child alone. They may not ready to talk about their day. Or second, use other parenting tools, such as Conversation Extenders and Reflective Listening parenting tools.
Some children have difficulty expressing their thoughts and feelings.
Using various tools together may be more efficient, and less mechanical, in getting a child to talk. Generally, older children have better communication skills than do younger children. But parents can use this parenting tool with preschoolers as a way of developing their new language abilities. In fact, communication skills can decrease aggressive actions, like biting, when the problem underlying the aggressive behavior is frustration over not being able to communicate a need or want. Contrary to what most parents might believe, children want their parent's approval, especially at an early age.