Wilson said that he did not want to

Wilson said that he did not want to______ any further responsibilities.

.take on

get on

put up

look up

答案及解析：本题考查动词短语辨析A选项，take on responsibilities 意为“承担责任”；take on“承担”，综上，A选项正确。B选项，get on“上（车、马等），穿上，进展”，故排除。C选项，put up“建造，举起，张贴”，故排除。D选项，look up“查阅，仰视，看望”，故排除。故正确答案为A 项。