Which sentence uses the past progressive tense of throw? A. Felipe throws baseballs at the target all morning. B. Felipe threw baseballs at the target all morning. C. Felipe is throwing baseballs at the target all morning. D. Felipe was throwing baseballs at the target all morning.
Past progressive tense indicates something that was happening in the past. It forms with the to be verb (in the past) and the participle of the verb with an -ing ending. So, the answer is D: was throwing.
