--What do you think of the price of these computers?
--They are at least equal in price to, if not cheaper than, ____at the other companies.
A  it          B. ones         C.that           D.the ones
The book is not _____ what we paid.
| A.worth | B.valuable | C.cost | D.dear | 
The thief ran away at the _____ of a policeman.
| A.sight | B.screen | C.sound | D.seeing | 
There are usually at least two _____ of looking.
| A.means | B.ways | C.directions | D.courses | 
My sister cleans the house from _____ to bottom when she is expecting visitors.
| A.roof | B.ground | C.floor | D.top | 
Facing danger, he always _____ calm.
| A.seems | B.remains | C.becomes | D.appears |