She was fortunate ______ to star in the film which ______ in the remote mountainous village.

A．having been picked out; was set

B．to have been chosen; set

C．to be picked out; was set

D．to have been chosen; was set

小娜和小丽两人学习上互相帮助，生活上互相关心。文科偏好的小娜总是能得到擅长理科的小丽的热心辅导，而小丽的作文水平在小娜的点拨下也有了长足的进步。这告诉我们[ ]

A．朋友间的给予与分担必须完全均等

B．交友是一个平等互惠的过程

C．必须结交能够为自己提供帮助的朋友

D．朋友就是相互利用，利益互换