I really don’t know how to express my thanks to Mr. Li, my high school English teacher, without whose help I__________ to college that year.
| A．weren’t to go | B．hadn’t been able to go |
| C．couldn’t go | D．couldn’t have gone |
He wrote a letter________he explained what had happened in the accident.
| A．what | B．which |
| C．where | D．how |
Nowadays people are more concerned about the environment________they live.
| A．what | B．which |
| C．when | D．where |
Happiness and success often come to those________are good at recognizing their own strengths.
| A．whom | B．who |
| C．what | D．which |
Mo Yan was awarded the Nobel Prize for Literature in 2012，________ made one of the Chinese people’s longheld dreams come true.
| A．it | B．that |
| C．what | D．which |
The president of the World Bank says he has a passion for China，________he remembers starting as early as his childhood.
| A．where | B．which |
| C．what | D．when |