Ⅰ.单句语法填空
1．I am mixed up about these confusing(confuse)directions.
2．The police went through the whole building but didn't find anything valuable.
3．Do you have any difficulty in working(work) with others?
4．The student，along with his parents，has been asked(ask) for information on the book so far.
5．There is an increasing tendency(tend) for women to have children later in life.
6．His English was so limited(limit) that he couldn't even tell the foreign friend where he was from.
