Apples are usually sold by ______weight, and eggs are sometimes sold by ______ dozen.
| A．the; the | B．不填; a | C．不填; the | D．the; a |
I have many friends, some __________ are businessmen.
| A．of them | B．from which |
| C．of who | D．of whom |
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 |
The famous scientist said it was his primary school teachers and their lessons __________ he was fond of __________ influenced his whole life.
| A．that; that | B．that; which |
| C．which; which | D．what; that |
That evening，__________ I will tell you more about later, I ended up working very late.
| A．that | B．which |
| C．what | D．when |
After the flooding, people were suffering in that area，__________ urgently needed clean water, medicine and shelter to survive.
| A．which | B．who |
| C．where | D．what |