In the competition, each side works like crazy to stay one step ______ the other.
| A．ahead of | B．apart from |
| C．rather than | D．except for |
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 |
In some countries, _____ is called “equality” doesn’t really mean equal rights for all people.
| A．which | B．what | C．that | D．one |