The math problem is too difficult I can’t .A. work out itB. work it outC. work them outD.

问题补充：

The math problem is too difficult ,I can’t .

A. work out it

B. work it out

C. work them out

D. put it out

答案：

A. work out it

(答案→)B. work it out

C. work them out

D. put it out

解析：根据语境可知此句含义是这个问题太难了，我做不出来。Work 士是固定的动词短语，表示解决，处理的意思，又因宾语是人称代词，故放在work out的中间，故选B。