1. The children all turned _____ the famous actress as she entered the classroom. ［2009全国卷Ⅰ, 30］
A. looked at B. to look at
C. to looking at D. look at
2. —What do you think of teaching, Bob?
—I find it fun and challenging. It is a job ______ you are doing something serious but interesting. ［2009北京, 26］
A. where B. which C. when D. that
