Once my mom told me a story.Ten years ago when she and my dad were newly married （結(jié)婚），suddenly one day，she got phone calls from an elderly lady.The lady wanted to speak to someone named Donna.My mom（1）

explained

explained

with great care that she was not Donna，but the lady would（2）s

till

till

say my mom was Donna.
  At least once a week，this old lady would continue to call for Donna—sometimes more!Every call（3）s

tarted

tarted

with， "Hello，Donna!How are you？" She never cared （4）

if/whether

if/whether

it was the wrong number.She talked about her daily life，her cat，her garden，and the newspaper.From her stories，my mom guessed that Donna was a childhood friend of the lady.She could only spent 10 or 15 minutes on the phone before getting tired and ending the（5）

communication

communication

（communicate） with goodbye.
   The whole thing（6）l

asted

asted

for about a year.Then the calls just stopped.Why didn't she call？Did anything unexpected happen？At first my mom felt worried and had trouble（7）

falling

falling

（fall） asleep.Now she still thinks of that lady sometimes and（8）

wonders

wonders

（wonder） about her.Perhaps that woman knew there was no Donna and was just（9）l

onely

onely

at that time.She had nobody else to talk to.
   So my mom's small act of（10）k

indness

indness

might make a difference to someone in need.