—What are you anxious about?
—_______.
A．How can we succeed B．Whether we can succeed
C．When can we succeed D．That we can succeed
The boss refused to sell the car for ________ he thought was not satisfactory.
A．that B．which C．how D．what
―The river runs clear.
―We all appreciate the importance the local government has_______ the environmental protection.
A．attached to B．left for
C．responded to D．learnt from
Be careful that a good name of a product doesn’t _______ mean good quality of it.
A．alternatively B．approximately C．obviously D．necessarily
What we all know is that the old scientist, _______ life was hard in the past, still works very hard in his eighties.
A．for whom B．for him
C．for whose D．for which
_______ he has made a decision, it is not easy for you to make him change his mind.
A．Though B．Unless C．Once D．Until
