（2013·大纲卷）Since nobody gave him any help, he have done the research on his own.
| A．can | B．must | C．would | D．Need |
--- Haven’t seen you for ages! Where have you been ?
--- I went to Ningxia and _______ there for one year, teaching as a volunteer.
| A．stayed | B．stay |
| C．had stayed | D．am staying |
When _________ our national flag _______, we feel our hearts full of pride and strength.
| A．watch; rising | B．watching ; raising |
| C．watching ; being raised | D．watch; to rise |
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 |