Mark was a student at this university from 1999 to 2003, ____ , he studied very hard and was made Chairman of the Students' Union.
| A．during which time | B．for which time | C．during whose time | D．by that time |
By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, _______appeared a rare rainbow soon.
| A．of which | B．on which | C．from which | D．above which |
Today, we’ll discuss a number of cases beginners of English fail to use the language properly.
| A．which | B．as | C．why | D．where |
After gradutation she reached a point in her careet she heeded to decion what to do.
| A．that | B．what | C．which | D．where |
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 |
We shouldn’t spent our money testing so many people,most of _____are healthy
| A．that | B．which | C．what | D．whom |