He said all that remained was to agree to a time and venue..

=He said what remained was to agree to a time and venue
He主
said谓
all that remained was to agree to a time and venue（宾语从句）
all从句主语
that remained定语从句
was系动词
to agree to a time and venue表语,解释主语all
他说剩下的就是同意时间和场所。
再问： http://zhidao。baidu。com/question/534532771?quesup2&oldq=1 这一题怎么做