Some boys stood around a tall tree. "It would be （1）

interesting

interesting

[ˈɪntrəstɪŋ] to climb to the top!" they said to （2）

each other

each other

（互相）.
   The boys then decided to play a game to see （3）w

ho

ho

could climb to the top of the tree first.
   Their mothers were sitting not far away， （4）c

heering

heering

up their children as they played.
   One of the climbers was an 8-year-old boy named David.He was the shortest child（5）

in

in

the group. （6）

No one

No one

（没有人） thought he would win the competition.
   Then the game （7）

started/began

started/began

.All of the boys （8）

tried/did their best

tried/did their best

（尽最大努力） to climb as high as they could.（9）

Although/Though

Although/Though

the other boys climbed faster than David in the beginning，he reached the top of the tree fastest（10）

in the end/at last

in the end/at last

（最后）.
   His mother was happy （11）

to

to

see this.She asked him， "David，how did you try to reach the top of the tree so （12）q

uickly

uickly

？"
   "It was easy，" David said. "The other children kept looking down as they climbed.When they realized how high they were，they got scared（13）

and

and

were afraid of falling down.I，however，looked only up.When I saw how close I was，I（14）k

ept

ept

going higher and higher until I reached the top."
   It is true in life that if we just keep going forward without （15）

looking back

looking back

（回头看），we are more likely to reach our dreams.