The cause he had devoted himself to _______ a perfect success.
| A．proving | B．proved | C．was proved | D．has been proved |
1Mary was always singing high praise for her role in the office, _______，of course,made her colleagues unhappy.
| A．who | B．which | C．this | D．what |
After 10 years of hard time,the young lady has turned movie star, _______ she dreamed of becoming in her childhood.
| A．who | B．which | C．that | D．what |
We have eight foreign teachers in our school,five of _______ are young ladies.
| A．them | B．whom | C．who | D．which |
I work in a business _______ almost everyone is waiting for a great chance.
| A．how | B．which | C．where | D．that |
We are living in an age _______ many things can be done on computers and the Internet.
| A．which | B．that | C．whose | D．when |