Now,she is planning__new career and her once-broken heart is

Now,she is planning__new career and her once-broken heart is filled with __hope
A a,the B /,the C the ,/ D a,/
为什么不选D

Now,she is planning_a_new career and her once-broken heart is filled with _the_hope
现在,她正在计划一个新事业,她的曾经破碎的心充满了希望.
一个新事业 用到a 没问题,而hope（这里是名词）说的是关于前面提到的事业的希望,因此加了the,不过个人认为不是考试的话,不用the 更好.
The Japanese Prime Minister expressed the hope that the Okinawa summit would endorse the statement.日本首相表示在冲绳峰会上签署声明的希望.