题目内容：

Here is __his father gave him yesterday,(that,what,which,it)

优质解答

选what是对的,句子里缺一个is的宾语,而且需要引导后面的句子,只能选用what,是一个表语从句,that和which可以引导定语从句,但前面要有先行词,the×thing×that,