阅读下列短文，从各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Lucky, our beautiful dog, isn’t with us any more. But she brought such joy and love into our lives           we still miss her. There are so many wonderful stories about the love in this dog, but my favorite is this one:
It was an autumn day in Minnesota. Unexpectedly, a big snowstorm which no one was prepared for           our city.
We have two apple trees in our backyard. Lucky loved apples. When she went outside, she’d hold an apple in her           and take it into the house to save for eating later. The apples had been on the ground and were often dirty so I wasn’t always           that Lucky had brought them into the house.
On the day that it snowed too early in the season, Lucky went outside and I        her from the window. I noticed that she was          digging to bring the apples to the surface so they could be seen          the snow. I wondered why she was doing this. She seemed to be completely busy with some kind of important task to find as many          as possible during her yard time.
       , she had one apple in her mouth when I called her back into the house. About five minutes later I looked outside. The yard was completely covered with birds. Lucky had          all those apples for her bird and squirrel friends to eat. She knew that they wouldn’t have stored enough food to survive such an early winter!

A．why B．if C．when D．that

A．hit B．attacked C．beat D．caught

A．nose B．stomach C．mouth D．ear

A．happy B．angry C．worried D．excited

A．heard B．helped C．watched D．followed

A．gently B．madly C．easily D．sadly

A．under B．across C．beyond D．above

A．apples B．trees C．birds D．squirrels

A．As a result B．As usual C．In fact D．In a word

A．eaten up B．put up C．dug up D．cleaned up