have a solid idea
举一反三
- In ____ times, people didn't have a solid idea of childhood as being separate from adulthood. （以前的，先前的）
- In _______ times, people didn’t have a solid idea of childhood as being separate from adulthood. A: before B: following C: ancient D: previous
- In ________ times, people didn't have a solid idea of childhood as being separate from adulthood. A: future B: previous C: past 5 years D: those
- have no idea
- They have no idea at all ______ .