根据下面资料，回答1-20题
For years, thought leaders like Sheryl Sandberg have been offering remedies for the "work-life balance dilemma," most aimed 1 at women. Some experts told women to lean in, 2 others advised stepping back. A few even maintained that the only way forward was to return to "ultra-traditional" gender roles. What all these strategies have in common is the 3 that the conflict between work and family can be solved by changing our institutions and relationships.
But 4 there is no solution? More than a century ago, the kibbutz movement made a dramatic attempt to 5 work-family conflict once and for all. In these small communal settlements, children didn't live with their parents 6 spent most of their time in "children's houses," 7 they ate meals, attended school and even slept. The idea was to free mothers and fathers from the burdens of caregiving, giving them the opportunity to 8 fully in the work of the kibbutz.
Yet even when work-life conflicts appeared to have been solved, mothers weren't 9 with the arrangement. A study 10 on in-depth interviews with 123 mothers from 13 kibbutzim, found that nearly all the mothers believed their children were happy in the children's houses；11 they still wanted more contact with their offspring than kibbutz life 12. In the end, mothers drove the kibbutzim to 13 communal child-rearing arrangements.
The 14 of all our attempts to end work-family conflict suggests that we need to stop thinking of it as a problem to be solved, and 15 understanding it as a tragedy in the ancient Greek sense—a conflict between two competing goods. In our careers, we are 16 beings, honing our talents and earning financial rewards; as members of a family, we prioritize our connection to those we love.
17 of these identities can be given up without a cost. We wouldn't want to "solve" our desire to care for our children, or lose our motivation to work.18 lamenting the difficulty of balancing the two endeavors, then, we can try to appreciate the productivity that results from forces in 19.Having conflicting obligations and playing different roles is 20 for physical and emotional health, forcing us to engage in activities that are good for us, such as physical activity and social engagement.
第（7）题选

A that

B whether

C when

D where