问题
选择题
He began to __________ because every means _______ tried already.
A．lose heart; has been
B．lose heart; had been
C．lose his heart; was
D．lose his heart; had
答案
答案：B
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”。