—May I speak to Mr. Li?

—Sorry. He isn’t in now. He      somewhere abroad since last Friday.

A．has been

B．has been to

C．has gone to

D．has been in

每个人都有对前路感到______的时刻，周遭骤而变得晦暗灰沉，人就畏缩起来，______着不敢踏前一步。然而，当心灯渐亮，一切又回复正常了，乐观与自信的性情再度发挥鞭策作用，还仿佛有一首伴行曲，______着前瞻的心。

依次填入画横线部分最恰当的一项是（）。

A．茫然；迟疑；鼓舞

B．迷惘；犹豫；鼓动

C．惶然；踌躇；鼓励

D．渺茫；踯躅；激荡