1. There are hundreds of visitors _ in front of the Art Gallery to have a look at Van Goghs paintings.A. waited B. to wait C. waiting D. wait2. _ the employees working efficiency, the supervisor will allow them to have a coffee break.A. Improving B. To improve C. Having improved D. Improved3. In the dream Peter saw himself _ by a fierce wolf, and he woke suddenly with a start.A. chased B. to be chased C. be chased
