___ he could speak again, I left the classroom.
| A．Not until | B．Before | C．After | D．While |
He did itit took me.
| A．one-third a time | B．one-third time |
| C．the one-third time | D．one-third the time |
The small box isas the big one.
| A．one-tenth the size | B．one-tenths as large |
| C．one-tenths large | D．one-tenth as large |
We’ve failed three times in the experiment,so we’ll have to do ittime.
| A．four | B．a fourth | C．fourth | D．the fourth |
China has producedthis year as it did in 1996.
| A．as much steel twice | B．as twice much steel |
| C．twice steel as much | D．twice as much steel |
The moon isthe earth
| A．as big as forty-nine times. | B．forty-nine times bigger than |
| C．as big as onethird | D．one-third the size of |