.Was it through Mary , ____ was working at a high school , _____ you get to know Tom ?
| A．who, who | B．that, which | C．who, that | D．who, which |
My English teacher gave us a suggestion yesterday, _____is often the case, ______ our monitor organize a debate after class.
| A．which, which | B．which, that | C．as, that | D．as, which |
Tsinghua University, ______ in 1911, is home a great number of outstanding figures.
| A．found | B．founding | C．founded | D．to be founded |
It was three months later _____ he completed the job with difficulty.
| A．since | B．before | C．while | D．that |
He is rather difficult to make friends with, but his friendship, _____ is more true than anyone else’s.
| A．Once gaining | B．Once gained | C．Once is gaining | D．Once he gained |
______ and you will be admitted into your desired university.
| A．If making one more effort | B．If you make one more effort |
| C．One more effort | D．To make one more effort |