5. Never before _____ so highly successful in his attempts to forecast the weather accurately on a small scale.
A: man has been
B: has man been
C: man is
D: is man
A: man has been
B: has man been
C: man is
D: is man
举一反三
- Never before so highly successful in his attempts to modify the weather on a very small scale. A: man has been,man is,has man been,will be man
- Never before ____ so highly<br/>successful in his attempts to change slightly the weather on a very<br/>small scale. A: man has been B: has man been C: will be man D: man was
- Never before ___ so highly successful in his attempts to forecast the weather accurately on a small scale.
- Man has been highly successful in his attempts to ________ the weather on a very small scale. A: erase B: repair C: resemble D: modify
- The man has been arrested. The man robbed him.(who)