请根据下列汉语提示写出英语单词。
1．粉末n．________
2．口头的adj．________
3．royal adj．________
4．ancestor n．________
1．因素n．________
2．永久的adj．________
3．安慰n．＆vt．________
4．基本的adj．________
请选择本单元中合适的词，将其恰当形式填到横线上。
He is the(very)________ of his father．
The company is trying to create a young energetic ________．
The tobacco industry has been trying to improve its ________．
Two people in the flat ________ hearing a loud crash about 1.30 a.m．
I can't ever ________ Dad hugging me．Neither did I sit on his knee．
Both the Americans and the Russians are ________ to avoid conflict in South Asia．
He is ________ that there should be no delay in sending the injured person to hospital．
In its ________ report, UNICEF says at least 40,000 children die every day．
Water is a completely odourless(无味的)，colourless, ________ liquid．
In spite of my ________ calm I was actually very shaken．
The teacher ________ some time for the students to ask him questions．
________ putting a paper bag over our heads there is not a great deal we can do when the spots have come to visit．