— Miss Lin _____ my desk-mate with her lessons when I left school.
—She is really a nice teacher.
| A．helps | B．is helping |
| C．was helping | D．help |
The pen, _____ I paid 2 dollars, was lost.
| A．to which | B．for which | C．which | D．that |
We travelled together as far as Chicago, _____ we said goodbye to each other.
| A．which | B．when | C．why | D．where |
_____ was expected, he failed in the exam.
| A．That | B．As | C．Which | D．It |
I was about to go to bed _____ one of my old classmates made a call to me.
| A．when | B．as | C．while | D．that |
Mr King, _____ legs were badly hurt, was quickly taken to hospital.
| A．who | B．that | C．whom | D．whose |