That children ______meet with setbacks is a matter of necessity as they_____, so parents don’t worry about that.

—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?—________ my students have a try?

According to the rules, students ______ get grades not lower than 85% in any subject in order to get the scholarship.

—There is a pen on the ground. Is it Li Long’s?—It         Li Long’s. He went to Beijing many days ago.

–Hi, Tom. Any idea where Jane is? --She _______ in the classroom. I saw her there just now.