_______ with care, one tin will last for six weeks.

 Many people have donated that type of blood; however, the blood bank needs _____.

 He was very tired，and________he didn’t give the market report.

 Everybody in the village likes Jack because he is good at telling and ________jokes.

 The doctor thought ________ would be good for you to have a holiday.

 —Do you have enough to________all your daily expenses?

—Oh yes，enough and to spare.

 We ______ the difficulty together, but why didn’t you tell me?

 —How about your journey to Mount Emei?

—Everything was wonderful except that our car________twice on the way.

 Don’t handle the vase as if it ____ made of steel.

I tend to accept any idea put forward by experts on TV. One day, a sociologist(社会学家) proposed that the   36  society has been consuming modern humans little by little. For fear that I would become a victim of the consumer society, I   37  hurried to a bicycle shop in my neighborhood.   38  the shopkeeper Mr. Johnson was selling me the bicycle, he said, “This is the best thing you   39  have done. Life has become hopelessly   40 . A bicycle is simple, and it brings to you   41  things: fresh air, sunshine and exercise.” I agreed. Happy as a child, I got on the bicycle and headed out onto the streets. After some time, I   42  at the other end of the town. I was   43  that this simple vehicle could let me   44  long distances in a fairly short time. But how   45  did I really go?

Since I hated to be   46 , I went back to Mr. Johnson and asked him to   47  an odometer (里程表) on my bicycle. He agreed, but   48 , “An odometer without a speedometer (速度计) is like a   49  without a knife.” I admitted he was right and in a few minutes, the two devices (装置) were   50  to the handlebars of my bicycle. “What about a horn?” he then asked. “Look, this horn is no larger than a matchbox and has many   51 .” Attracted by these functions, I bought the horn.

“You can’t leave the back part   52 ,” noted Mr. Johnson. He fixed a metal box with buttons   53  the seat, and said, “Is there anything better than this oven(烤箱) when you feel   54  on your way? I can give you a special discount.” I was not strong enough to   55  the offer.

“I congratulate you once more; this is the best thing you could have done,” said Mr. Johnson in the end.

18.