1 | He had racked his brain. | |
2 | He racked his brains to find an idea similar to the one I was thinking of. | |
3 | Women often struggle to figure out how to gain respect from male colleagues. | |
4 | With a sagging property market, US realtors are racking their brains to get a home sold. | |
5 | Actually, I have wracked my mind and heart for what I ought to say to you today. |