用所给词的适当形式填空.My uncle ______(use) to be a worker,but he is a teacher now

问题描述:

用所给词的适当形式填空.My uncle ______(use) to be a worker,but he is a teacher now

used
used to ...过去(常常) 固定句式
我叔叔过去是个工人,但现在是个老师.