A study has proven old people who are ______eaters of fish during their youth lose fewer brain cells.
| A．regular | B．common | C．special | D．proper |
It is said _________ was how Chinese characters developed.
| A．that | B．that which | C．that that | D．what |
The coin was almost worthless. So it was of small ________.
| A．honour | B．quality | C．value | D．price |
She had hardly got back to the kitchen ________ the doorbell rang.
| A．when | B．than | C．as | D．as soon as |
They discovered the cause of the fire accidentally. They discovered it _______.
| A．fortunately | B．by chance | C．all of a sudden | D．on purpose |
They lost their way in the mountain and _________ made matters worse was _______ it was getting dark.
| A．that, because | B．what, that | C．/, because | D．that, that |