根据句意和首字母或汉语提示，将单词的正确形式写在题中相应的横线上。
There’s nothing in this box. Look, it’s e______________.
If you are in danger, remember to dial (拨) the telephone n ______________ 110 at once.
— Do you know what the p ______________ of China is now?
— It’s over 1.3 billion.
The ice is too t ______________. It’s very dangerous to skate on it.
It’s good for our health to g ______________ up early in the morning.
Last summer holiday, my teacher ______________ (介绍) Joy to me, and now we are close friends.
Jack is so smart that he can answer these questions ______________ (容易地) .
People will use robots to do the ______________ (家务) in the future.
Little Tom did quite well in the English exam. He hardly made any ______________ （错误） .
This is our new teaching building. It was  ______________（建造）last year.