阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。
(2012年湖北荆州毕业班质检)I was shopping at a department store and had just boarded the down escalator(电动扶梯) when I noticed a woman standing at the side. She looked about 65 years old，and her expression told me she was ____.I turned toward her and asked，“Do you need help？”
As the escalator continued moving I heard the woman reply ____，“I'm afraid. ”There was a hint(暗示) of disbelief in her _   _.“Do you want me to come ____ and get you？”I called to her. She ____.But by the time I ____ her，the woman reconsidered，“Sorry，I don't think I can even put my feet on it.” I was suddenly ____ that I took a more difficult task than I had expected. “I know we can do it，”I comforted her，“I can ____ you.” She looked down at the beast. Then her eyes came back to mine，looking ____.“This has never ____ me before，”she said，as much to herself as to me. I felt that her sudden ____ had something to do with the escalator's inhuman mechanical coldness.
I took her arm. She made a little sound of ____ as we stepped on，but she ____ slightly as the stairs moved us ____.“I don't  understand this at all，” she said. As we neared the bottom，her ____ was tight on my arm again，but we did fine. “I'm so    __   ...” she said，“It was nothing，” I said，“I was happy to do it.”
Yes，I was very happy at that moment. I am busy __  _ a family and working full time. I do ____ to help others. For a brief moment，I had a flash of understanding into why someone would become a nurse or a social worker. When I ____ the woman，I felt pure，whole and purposeful. It was a ____ moment than I'd had in weeks.

A．scared B．delighted C．enjoyable D．frustrated

A．patiently B．pleasantly C．coldly D．softly

A．behavior B．expression C．question D．voice

A．in B．back C．down D．out

A．nodded B．refused C．smiled D．waved

A．arrived B．left C．reached D．grasped

A．disappointed B．convinced C．sure D．aware

A．care about B．hold on to C．send for D．take control of

A．optimistic B．proud C．doubtful D．angry

A．attended to B．happened to C．came across D．let down

A．fear B．decision C．attitude D．change

A．interest B．alarm C．joy D．surprise

A．frightened B．worried C．released D．relaxed

A．downward B．upward C．outward D．backward

A．push B．hold C．weight D．shake

A．grateful B．afraid C．brave D．embarrassed

A．caring for B．seeking for C．reaching for D．accounting for

A．much B．a lot C．little D．a little

A．rescued B．contacted C．seized D．helped

A．purer B．more difficult C．happier D．more significant