I think this trip was well worth _____we had paid.
| A．that | B．what | C．which | D．how |
（2012浙江卷） Ellen was a painter of birds and of nature, _____, for some reason, had withdrawn from all human society.
| A．which | B．who | C．where | D．whom |
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 |
Maria has written two novels, both of ________ have been made into television series.
| A．them | B．that |
| C．which | D．what |
（2013·安徽卷)Mo Yan was awarded the Nobel Prize for Literature in 2012, made one of the Chinese people’s long-held dreams come true.
| A．it | B．that | C．what | D．which |
John invited about 40 people to his wedding, most of ______ are family members.
| A．them |
| B．that |
| C．which |
| D．whom |