1 . Hull University states that if any student should break the rules on proper language use, they shall be offered feedback as to why, while deduction of marks will be taken on a case-by-case ______.

A．base

B．charge

C．account

D．basis

2 . Without facts, we can’t form a correct opinion, for we need to have actual knowledge ________ our thinking.

A．which to be based on	B．on which to base
C．which to base on	D．on which to be based