E-mail, as well as telephones, _____ an important part in daily communication.
| A．is playing | B．have played | C．are playing | D．play |
Some pre-school children go to a day-care center, __________ they learn simple games and songs.
| A．then | B．there |
| C．while | D．where |
After graduation she reached a point in her career __________ she had to decide what to do.
| A．that | B．what |
| C．which | D．where |
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 |