1. I'll tell our monitor the good news as soon as he __________ (come) back to school.
2. It was a pity that you ___________ (not attend) the meeting last Friday afternoon.
3. We should think about what we can do __________ (keep) animals and plants from becoming endangered.
4. On May 12, 2008, sichuan ___________ (hit) by a strong earthquake which killed many people and distroyed
    many buildings.
5. Playing computer games is delightful, but                    (spend) too much time on it may do harm.
6. Today, to hold the Olympic Games ___________ (consider) as a rich prize for a country.
7. Many changes ___________ (take) place in our daily life since the invention of the computer.
8. The policeman said that he ___________ (see) a Young Pioneer help an old woman cross the road the day
    before.
9. Our Maths teacher ___________ (prepare) the new lesson with other teachers in the office from 2 to 4
    yesterday afternoon.
10. The first step towards ___________ (protect) the environment is to try to throw away less rubbish.

     Today, roller-skating is easy and fun. But a long time ago, it wasn't easy at all. Before 1750, the idea
of   1    (skate) didn't exist. That changed because of a man   2    (name) Joseph Merlin.
     One day Merlin received an invitation   3   (attend) a fancy dress ball. He was very pleased and a little
excited. As the day of the party came near, Merlin began to think how   4   (make) a grand entrance at the
party. He had an idea. He thought he   5   (get ) a lot of attention if he could skate into the room.
     Merlin    6    (try) different ways to make himself roll. Finally, he decided to put two wheels under each
shoe. These were the first roller skates. Merlin was very proud of his invention and dreamed of arriving at
the party on wheels while playing the violin.
     On the night of the party, Merlin rolled into the room    7   (play) the violin. Everyone was astonished to
see him. There    8   (be) just one problem. Merlin had no way to stop his roller skates. He rolled on and on.
Suddenly, he ran into a huge mirror that    9   (hang) on the wall. Down fell the mirror, breaking to pieces.
Nobody   10   (forget) Merlin′s grand entrance for a long time.
1.________  2.________  3.________  4.________  5.________
6.________  7.________  8.________  9.________  10.________

     Today, roller-skating is easy and fun. But a long time ago, it wasn't easy at all. Before 1750, the idea
of   1  (skate) didn't exist. That changed because of a man _2_(name) Joseph Merlin.
     One day Merlin received an invitation _3  (attend) a fancy dress ball. He was very pleased and a little
excited. As the day of the party came near, Merlin began to think how _4_(make) a grand entrance at
the party. He had an idea. He thought he _5_(get ) a lot of attention if he could skate into the room.
     Merlin _6_(try) different ways to make himself roll. Finally, he decided to put two wheels under each
shoe. These were the first roller skates. Merlin was very proud of his invention and dreamed of arriving
at the party on wheels while playing the violin.
     On the night of the party, Merlin rolled into the room _7_(play) the violin. Everyone was astonished
to see him. There _8  (be) just one problem. Merlin had no way to stop his roller skates. He rolled on
and on. Suddenly, he ran into a huge mirror that _9_(hang)on the wall. Down fell the mirror, breaking to
pieces. Nobody _10  (forget) Merlin?s grand entrance for a long time.
1.______ 2.______ 3.______ 4.______ 5.______
6.______ 7.______ 8.______ 9.______ 10.______

     Tomas Edison 1_____ a great inventor. He 2_____ many things. It 3_____ said he invented 10000
inventions. But when he 4_____ old. He was too proud that he didn't 5_____ any one advice, even they
were right. Then he didn't have an important invention in his old age.