Ⅰ.单句语法填空
1．This is the first time we ________ (talk)about our future so seriously.
2．The ________ (protect)of China's overseas investment interests will be an important task for the Chinese government.
3．The manager arranged for him ________ (book)four plane tickets to Shanghai in advance.
4．Actually, girls can be ________ they want to be just like boys, whether it is a soldier, a scientist, or an officer.
