Up to now some less well-off people into the public rental house in Chongqing .A. moved

问题补充：

Up to now , some less well-off people into the public rental house in Chongqing .

A. moved

B. move

C. have moved

D. are moving

答案：

A. moved

B. move

(答案→)C. have moved

D. are moving

解析： 考查动词时态。时间状语Up to now ,到现在为止，是现在完成时态的标志，所以句子的谓语动词要用现在完成时态，选C。