They no longer have to large numbers of temporary workers to do the harvesting.
A. take on
B. hire on
C. work on
D. carry on
网友回答
(答案→)A. take on
B. hire on
C. work on
D. carry on
解析：首先我们要知道这四个词组的意思take on呈现，雇佣，等意思根据句意可知应为雇佣，所以A正确；B.hire on看似符合句意，实际没有这种用法应将on 去掉；C.work on从事；D.carry on执行的意思，综上选A.