He tried to return to work, but found he could no longer cope with his d______(费时费力的) job.
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Their spending on research is e______(过度的,过多的) and is slowing developments of new treatments.
Her lawyer said she understood the c______(结果,后果) of her actions and was prepared to go to jail.
If we'd all work together, I think we could a______(完成,实现) our goal.
The exercise obviously will improve strength and e______(持久力,忍耐力).