Why haven’t you asked her to come here?—She _______ an important experiment when I found her and she _____ it.

______ all day, he was terribly hungry.

You have spoken very good English ,_____you’re the beginner of learning. [ ]

My brother is a basketball player. —And he usually_____ very hard on the playground.

Thousands of years ago people discovered the phenomenon by chance, and this was _____ the idea of the compass first came from.