__________ more attention, the trees could have grown better.
| A．Given |
| B．To give |
| C．Giving |
| D．Having given |
Whenever asked to help me with my lessons, he always refuses, ______ he is too busy.
| A．to say | B．saying | C．says | D．having said |
______ its size with that of the whole earth, we find the highest mountain does not seem high at all.
| A．When compared | B．Compared to |
| C．To be compared | D．Comparing |
“How can we go outing in this kind of weather!”! Bob said,__________ out of the window.
| A．looking | B．looked | C．to look | D．having looked |
All the preparations for the work_______, we’re ready to start.
| A．are completed | B．have been completed |
| C．completed | D．had been completed |
Zhuhou, _______ on the Xiang River, is an important city, second only to Changsha.
| A．located | B．locating | C．being located | D．to be located |