By the time you have completed the essential training, you _____ exposed to virtually every new feature of the course．
A．are B．will have been C．have been D．will be
_______ more to be pitied than blamed．
A．Uneducated are B．Uneducated is
C．The uneducated are D．The uneducated is
Earth is believed ______ by an object the size of Mars at some point in the distant past
before its surface cooled．
A．to be hit B．to have hit C．to have been hit D．to hit
With temperature ______ so rapidly, we could not go with the experiment．
A．fall B．falling C．fallen D．to fall
--- Is John in the office?
---I didn’t see ______ there．
A．anyone B．someone C．everyone D．each one
请根据下面提示，写一篇短文。词数不少于50。
In your spoken English class, your teacher shows you the
following picture. You are asked to describe the picture and explain how your
understand it. 
