When reading English novels, I often idiomatic expressions that I can't understand．
| A．come across | B．go over |
| C．get across | D．take over |
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 |
The mere fact _____ most people believe nuclear war would be madness doesn’t mean that it will not occur.
| A．what | B．which | C．that | D．why |