通读下面短文，掌握其大意，然后在各题所给的A，B，C，D四个选项中，选出一个最佳答案。
I was in the queue for the supermarket checkout(付款台) earlier today．All of the checkouts were    36   , and the woman behind me was not happy! Every word that came from her mouth was a(n)    37   ! She wasn’t happy with the number of checkouts      38    ; she wasn’t happy with the amount of shopping some people had in their baskets; she wasn’t happy because this supermarket didn’t have a stand where she    39    scan her own shopping.
I listened to her    40   looking around as I loaded my stuff onto the conveyor belt (传送带)．I didn’t want    41    to do with that kind of attitude, and if ever I’d felt like letting someone go     42     of me, it wouldn’t be such a woman!
But then I    43   back．Standing beside the woman was a five-year-old girl,    44    her granddaughter．The girl’s part of the shopping    45   of some comic books.
I couldn’t    46   it．I pushed my shopping back to the end of the conveyor belt,     47    a space．“After you,” I said to the woman and the girl, and    48    them to a big    49    ．The woman was delighted, and even    50    to complain ---- until she was walking away．
So,  51   bother having helped? It was because that little girl was probably taking in her granny’s complaint like a sponge(海绵)．She was learning how to    52    situations like that by listening to her granny．I’d seen that I could interrupt that complaining, and put a smile and some   53    into the middle of it．
We can all complain; we can all react    54    , but it doesn’t have to be like that．And, even if only for a few     55     , I wanted to leave that little soul with just a glimpse of another way．

A．busy B．big C．free D．empty

A．quarrel B．argument C．praise D．complaint

A．opened B．closed C．left D．hired

A．would B．need C．could D．must

A．beyond B．without C．with D．by

A．something B．nothing C．everything D．anything

A．ahead B．behind C．beside D．back

A．went B．glanced C．focused D．jumped

A．merely B．surely C．possibly D．luckily

A．contained B．included C．consisted D．made

A．think B．help C．believe D．forget

A．taking B．leaving C．bringing D．occupying

A．returned B．pleased C．treated D．served

A．smile B．meal C．joke D．room

A．thanked B．paid C．checked D．forgot

A．how B．what C．why D．who

A．face with B．put with C．deal with D．do with

A．truth B．kindness C．courage D．money

A．actively B．correctly C．negatively D．patiently

A．hours B．chances C．years D．seconds