We must keep our room clean, for dirt and disease go______, you know.
| A．hand in hand | B．step by step | C．from time ti time | D．one zfter another |
Even if they are on sale, these refrigerators are equal in price to, if not more expensive than, _____ at the other store.
| A．anyone | B．the others | C．that | D．the ones |
His landlady gave him a week's _____ to leave the flat.
| A．threat | B．notice | C．advice | D．caution |
The noise was so _____ that only those with excellent hearing were aware of it.
| A．dim | B．soft | C．faint | D．gentle |
We can't _____ one to change the habits of a lifetime in a short time.
| A．hope | B．wait | C．expect | D．imagine |
He thought I was talking about his son, ____in fact I was talking about mine.
| A．when | B．while | C．however | D．which |