Ⅰ. 单句语法填空
1. Having selected(select) the proper present, they sent it to their respectable professor.
2. Not knowing(know) what to do, the children had to wait for their parents to come back.
3. Hearing(hear) the signal, people ran out of the building.
4. Judging(judge) from the appearance, it is very peaceful, but in fact, a war will break out soon.
5. The decision having been made(make), what is to be done now is how to carry it out.
6. Working(work) harder at English, you’ll make greater progress.
7. When exploring the cave, they found a valuable mineral.
8. It being(be) Sunday, many people go to the gymnasium to do physical exercise.
9. Looking (look) out through the window, we saw a beautiful scenery.
10. The case shocked the public, causing(cause) a hot debate over human nature on the Internet.
11. The villagers saw the fire burning brightly in the distance. When they hurried there, they found some houses burned/burnt to the ground already. (burn)
12. When I was on my way to school this morning, I saw two women arguing(argue).
