with,did,go,Sunday,the,who,Sam,last,to,beach 连词成均

问题描述:

with,did,go,Sunday,the,who,Sam,last,to,beach 连词成均

Who did the homework for Sam before he has to go to the beach last Sunday?

who did Sam go to the beach with last Sunday?

who did Sam go to the beach with last Sunday?
====with whom did Sam go to the beach last Sunday?