完形填空。阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
My sister, Cathy, who lives in Vancouver, sent me a package full of Christmas gifts. She told me that she had 1 it in advance to make sure it would arrive at my house weeks before the 2 . Christmas was drawing near, but no package arrived. Cathy checked the tracking number every 3 with Canada Post, and every evening she would call me to 4 if there was any sign of it on our end.
