_____improve her English, Jenny bought a lot of tapes for herself.
| A．So as to | B．In order that | C．So that | D．In order to |
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 |