1. _______ more attention, the tree could have grown better.
A. Given          B. To give C. Giving         D. Having given.
2. ________ is thought, he almost ran into the car in front of him.
A. Losing     B. Having lost C. Lost       D. To lose
3. The murderer was brought in, with his hands ___ behind his back.  A. being tied        B. having tied   C. to be tied        D. tied