六.选择填空(15分)1. Great changes ______ in China in the past 20 years.
She felt _____ of having asked such a silly question when the audience couldn't help laughing.
The driver can adjust the heating in winter and the air conditioning in summer to suit his own _____.
There is not much time left; So I'll tell you about it _____.
The rain was heavy and _____ the land was flooded.
From the cheers and shouts of _____, I gathered that he was winning the race.