___, Nathan gave back the enormous amount of money he found.
| A．To his credit |
| B．To his joy |
| C．To his surprise |
| D．To his sorrow |
Since the time humankind started gardening, we __ to make our environment more beautiful.
| A．try | B．have been trying |
| C．are trying | D．will try |
All the books donated by the students from urban schools are said ________ to the students in the earthquake-stricken areas the other day.
| A．to have been sent | B．being sent |
| C．having been sent | D．to be sent |
We got near a garden, _________ owner sitting in it .
| A．its | B．whose | C．that | D．which |
To tell you the truth, I think it is you, ________Mr. Smith, ________.
| A．less than; which are to be blamed |
| B．rather than; that are to blame |
| C．other than; that is to blame |
| D．more than; who is to blame |
________ the global economy is showing signs of recovery, many developing countries are still suffering.
| A．As | B．Where | C．How | D．While |