–What do you think of teaching, Bob?–I find it fun and challenging. It is a job ___ you are doing something serious but interesting.
He didn’t come on time, it impossible for us to hold such an important meeting.
He at her face to see whether she cried.
Julie was good at German, French and Russian, all of she spoke fluently.
When Alice came to, she didn’t know how long she there.
–We got here Tuesday afternoon. -- Why didn’t you call us earlier?