31. Hillary Clinton arrived in Beijing yesterday, ______ the start of her short visit to China.
I am sorry to have you ________ so long.
The ______news made him feel _______.
----How did you sleep last night? -----Not very well. I ________ too late preparing a report for the meeting.
The young man insisted that he ________ killed the lady and insisted that he ________ set free as soon as possible.
You are supposed ________ the work yesterday but you forgot.