Ⅰ.单句语法填空
1．It was officially(official)acknowledged that the economy was decreasing.
2．“I didn't mean to upset you，”he said mildly(mild)．
3．He was hit by a falling tree and killed on the spot.
4．Many scientists have been working hard to find ways for people all over the world to be in harmony with nature.
5．The PE teacher stood in the middle of the playground，surrounded(surround)by a group of students.
6．The boy sat in the classroom doing(do) his homework.
7．They had difficulty(difficult) in keeping in touch with each other that they decided to move to the same city.
8．The announcement(announce)of their marriage would appear in the local newspaper next week.
9．Easton，you will go to prison where you will have time to reflect(reflect)on your own activities which brought you there.
10．Hearing the bad news，he was at a loss.
