______ was not until the early 20th century_____ the importance of his ideas was realized.

______home, I caught a thief stealing from a passer-by.

I clapped my hands happily _______ the pilot’s beautiful flight on the Air Show

Mr. Chen teaches __________math. We all like _________ very much.

“Mary looks hot and dry” “So _____ you ifyou had so high a fever”