---I feel terrible ,but I’ve just broken your ashtray.
---_________, for I had meant to change it.
| A．Go head | B．No problem |
| C．it’s nothing to get upset about | D．I’ll look into it immediately |
_____ might be expected, the response to the question was very mixed.
| A．As | B．That | C．It | D．What |
Living in the central Australia desert has its problem, _____ obtaining fresh water isn’t the least.
| A．for which | B．to which | C．of which | D．in which |
All _____ is a continuous supply of the necessities of life.
| A．what is needed | B．for our needs |
| C．the thing needed | D．that is needed |
We need a chairman _____.
| A．for whom everyone has confidence | B．in whom everyone has confidence |
| C．who everyone has confidence of | D．whom everyone has confidence on |
_____ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
| A．Even if | B．As far as | C．If only | D．So long as |