It was announced that only when the fire was would residnts(居民) be permitted to return to

问题补充：

It was announced that only when the fire was would residnts(居民) be permitted to return to their homes.

A. under control

B. in control of

C. beyond control

D. out of control

答案：

(答案→)A. under control

B. in control of

C. beyond control

D. out of control

解析：本题考查介词短语。句意：据宣称只有当火势得到控制的时候，居民们才可以返回家中。under control被控制住；处于控制之下。