Hello there,<br/><br/> There is a question that I am confused with. If anyone knows the answer, please help me. Thanks a lot.<br/><br/>Q: I bought a box of chocolates, two thirds of which <i>____</i> eaten by my brother. <br/><br/> ( was/ were)<br/><br/>Which verb-to-be should I put in the blank? Thanks a lot. <br/><br/>By Vivian