单项选择(每题1分)Is this the reason _____ she explained in the report for her success in the job?
I a report about the air pollution in my hometown all the morning and haven’t finished it yet.
It is I who going to have a trip to New York this summer.
I am determined to get a ticket for the concert it means standing in a line all night.
You have seen Helen in her office this morning because she’s been out of town for two weeks.
in 1898, Beijing University is one of the top universities in China.