In study after study over the past

In study after study over the past He ____ very hard in the past few years.(study) ( ) in the study? h____（the study of interpreting past ev In the past three years,we ( ) great progress in our study. If I ______(study) hard in the past,I _____ (pass) the exam Study abroad study in Think of w hat you study as stories in the past.翻译英语 some of us——(not study)hard in the past怎么填? in the study的中文 Dad is_____ing in the study. study in