单选题He began to __________&nb

问题补充：

单选题Hebeganto__________becauseeverymeans_______triedalready.A.lose heart; has beenB.lose heart; had beenC.lose his heart; wasD.lose his heart; had

答案：

B解析try发生在began之前，所以用过去完成时。lose heart 意思是“灰心，失去信心”；而lose one’s heart to意思是“爱上某人”。