Our club is open to adults only. ______ your children have entered without permission.
| A．There seems to be | B．It seems to be |
| C．There seems that | D．It seems that |
Time is of no importance to great thoughts, ________ are as fresh today as when they first passed through their authors' minds, ages ago.
| A．what | B．that |
| C．which | D．where |
Willpower is a kind of quality, ________ is ________ it takes to do anything well.
| A．what; which | B．what; what |
| C．which; which | D．which; what |
________ nearly all behavior is learned behavior is a basic assumption ________ has been put forward by social scientists.
| A．What; that | B．That; what |
| C．What; what | D．That; that |
The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.
| A．that | B．who |
| C．where | D．as |
________ some students are not aware of is ________ difficult life can be if they are not devoted to study.
| A．That; how | B．Which; what |
| C．What; what | D．What; how |