题目内容
________ an hour every day has made a considerable difference to my health.
| A．Having walked | B．Walk |
| C．Walking | D．Walked |
C
解析句意为： 每天步行一小时对我的健康很有益。此处为动名词短语作主语，阐述的是一个事实，故选C项。
______the bones under the sand，the scientists concluded that they came from the dinosaurs about 65 million years ago．
| A．Being inspected | B．Inspected |
| C．Having inspected | D．To inspect |
Generally speaking，prices of daily goods ________ through the Internet are lower than store prices.
| A．to buy | B．are bought |
| C．buying | D．bought |
________the working efficiency，the boss allows the employees to have a coffee break.
| A．Improving | B．To improve |
| C．Having improved | D．Improved |
________at the cafeteria before，Tina didn’t want to eat there again. (2013·山东，33)
| A．Having eaten | B．To eat |
| C．Eat | D．Eating |
The airport ________ next year will help promote tourism in this area. (2013·四川，10)
| A．being completed | B．to be completed |
| C．completed | D．having been completed |
Unless ________ to answer questions, the pupils won't talk in Mrs Smith's class.
| A．asking | B．asked |
| C．being asked | D．having asked |
________ the earth to be flat, many feared that Columbus would fall off the edge of the earth.
| A．Having believed | B．Believing |
| C．Believed | D．To believe |
Curious and ________， I rushed out of my dormitory when I heard the noise of three gunshots.
| A．astonishing | B．being astonished |
| C．astonished | D．to be astonished |