Only then did he the effects of his action.
| A．aware | B．aware of |
| C．become aware | D．become aware of |
He was educated at the local high school, __________ he went on to Beijing University.
| A．after which | B．after that |
| C．in which | D．in that |
By serving others, a person focuses on someone other than himself or herself, __________ can be very eye-opening and rewarding.
| A．who | B．which |
| C．what | D．that |
The village has developed a lot __________ we learned farming two years ago.
| A．when | B．which |
| C．that | D．where |
We shouldn’t spent our money testing so many people, most of __________ are healthy.
| A．that | B．which |
| C．what | D．whom |
Last week, only two people came to look at the house, __________ wanted to buy it.
| A．none of them | B．both of them |
| C．none of whom | D．neither of whom |