I have some problem _working out the prblem用介词 to,at,in,on填空,应选啥急

问题描述:

I have some problem _working out the prblem用介词 to,at,in,on填空,应选啥

I have some problem in working out the prblem.

in
固定搭配 have problem (in) doing sth. in可以省略

选in