will Mr. Black be able to regain control of the company.A. Only by working hardB. Only he

问题补充：

will Mr. Black be able to regain control of the company.

A. Only by working hard

B. Only he works hard

C. With hard work

D. Only if work hard

答案：

(答案→)A. Only by working hard

B. Only he works hard

C. With hard work

D. Only if work hard

解析： 此题考查倒装句。Only + 状语放在句首时，使用部分倒装，这道题中家的是介词短语by working hard，句意：只有通过努力工作布莱克先生才能够再次掌控这个公司。所以选A。