一、单词拼写
1．Nobody knows exactly the ________ (起源) of the earth.
2．He ________ (欺骗) the girl and took away all her money.
3．He ________ (获得) full marks in the examination.
4．The street cleaner is ________ (收集) rubbish in the rain.
5．The winner was ________ (授予) a gold medal.
