The air quality in the city, ________is shown in the report, has improved over the past two months.
| A．that | B．it | C．as | D．what |
Doctor Smith has made another wonderful discovery, _______ great importance.
| A．which I think is of | B．which I think it is of |
| C．which is I think | D．I think which is |
Ａlot of language learning,has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
| A．as | B．it | C．which | D．this |
I received a letter，poor spelling made me think it was written by a child．
| A．which | B．that | C．whose | D．who |
Even in winter the roadsides were places of beauty, _______ countless birds came to feed on the berries and on the seed heads of the dried weeds rising above the snow.
| A．which | B．when | C．where | D．what |
For many cities in the world, there is no room to spread out farther, _____New York is an example.
| A．for which | B．in which | C．of which | D．from which |
Living in the mountain area has its problems, ________ obtaining water is a big problem.
| A．of which | B．for what | C．as | D．whose |
Last winter, many places of southern China were struck by heavy snowstorms, __________more than 120 people were killed.
| A．from which | B．for which | C．at which | D．in which |
The scientist, __________ my father works, is about 50.
| A．on whom | B．to which | C．with which | D．with whom |
The school shop, ________ customers are mainly students, is closed during class time.
| A．which | B．where | C．whose | D．when |
We must take two aspects into consideration, both of __________ associated with the safety of the students .
| A．which | B．whom | C．that | D．them |
I borrowed several books from the library, ________ are about English study.
| A．two of them | B．and two of which | C．two of which | D．two of what |
Never before______ such a wonderful park, ______ I'd like to pay a visit again.
| A．had I seen; where | B．have I seen; which |
| C．have I seen; where | D．had I seen; which |
Mr. Zhang once taught in a remote village in Anhui province as a volunteer, _______was accessible only on foot.
| A．where | B．which | C．that | D．what |
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