The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.
| A．the; the | B．a; a | C．a; the | D．the; a |
Every means ______ tried, yet no result ______encouraging up to now.
| A．have been ...is | B．has been...has been | C．have ...has been | D．has...is |
Fifty-six ______ twenty-seven makes eighty-three.
| A．plus | B．minus | C．times | D．divided by |
. Which of the following is wrong?
This book is easy enough for ______.
| A．a six-year-old child | B．a child of six years old |
| C．a child aged six | D．a six years old child |
. ______ was done by the girl students.
| A．One three of the work | B．One third of the works |
| C．Two third of the works | D．Two thirds of the work |
There are ten boxes on the desk and the ______ is yours.
| A．nine | B．nineth | C．ninth | D．forth |