There were lots of people standing watching yet no one of them .A. offered to helpB. off

问题补充：

There were lots of people standing watching, yet no one of them .

A. offered to help

B. offered helping

C. was offered to help

D. was offering help

答案：

(答案→)A. offered to help

B. offered helping

C. was offered to help

D. was offering help

解析：考查词组：句意：有很多人站着看，但是没有人主动帮忙。Offer to do sth主动提出做，因为people和offer是主动关系，用主动式，选A。