按要求改写句子,每空格一词

问题描述:

按要求改写句子,每空格一词
He is the tallest of all the students in his class.(保持原句意思)
He is ______ ______ ______ _____ ______ students in his class.
My elder brother left middle school at the age of eighteen.(保持原句意思)
My elder brother ______ at middle school ______ he was eighteen.

1.He is taller than anyone of the students in his class.
2.My elder brother stayed at middle school until he was eighteen.