The Vietnam (越南) War broke out. The young husband         the army and died in the war. His wife and son began to have a         life after that. Even though their life was very hard and sometimes they didn’t have enough food to eat, the         still decided to raise her son by herself.
Several years later her son immigrated (移民) to America         finally became an engineer. He often sent letters to his mother with much money. However, with many excuses,  the son         to come back home to visit his mother.
    his mother died, the son returned. But he didn’t cry. His mother left a box behind. During the funeral (葬礼), the son opened the box and         cried and shouted, “Mom! Mom!”         looked at each other and then looked at the box. It was full of $100 bills and a piece of paper.
It read, “Son, I don’t spend too much money. I miss you a lot. Every time I heard a motorcycle        , I ran out of the door but it wasn’t you. I saved money         you in case (以防) you get sick.”

A．joined B．moved C．found D．sent

A．comfortable B．easy C．hard D．happy

A．son B．father C．husband D．wife

A．but B．and C．so D．or

A．refused B．agreed C．asked D．offered

A．Before B．When C．While D．As

A．slowly B．hardly C．quickly D．suddenly

A．Nobody B．Anyone C．Everyone D．Somebody

A．passing by B．going away C．showing up D．running off

A．with B．on C．to D．for