根据下列各句句意和空白之后的汉语提示词，在答题卡指定区域的横线上写出对应单词的正确形式，每空只写一词。
There seem to be          (没完没了的) meetings.
What is the          (平均的)rainfall for August in your company.
I got into a          (惊慌)when I found the door was locked.
To live is to learn, which means our knowledge needs          （更新）in case of falling behind.
After his        （解释）, I came to know why he was late for class.
Their office is on the         _(第十九)floor.
Parents should help their children to form a good       _(习惯).
A soldier’s duty is to           (服从)orders.
Some people work better under          _(压力).
Sally was          (收养) when he was four.