The scientist has {#blank#}1{#/blank#} on crop circles all his life, but he has not {#blank#}2{#/blank#} the mystery yet.

The book {#blank#}1{#/blank#}to you tomorrow.

Not only  {#blank#}1{#/blank#}the manager  {#blank#}2{#/blank#} her new design, but he also arranged for her to be in charge of the whole project.

The little planet called 1802 Zhang Heng is the first one {#blank#}1{#/blank#} a Chinese person.

我们从不担心答案会令我们失望，总是快乐而自信地开始每一次新探索 ， 发现一些意想不到、稀奇古怪的东西，随之而来的是更加奇妙的问题和奥秘。