15. With the reform of educational system, the teachers_____school I worked before have greatly changed their way of teaching.
—I saw your uncle take a taxi to the airport. Why didn’t you drive him there? —I __________. But my car ___________ .
_____ an important decision more on emotion than on reason, you will regret it sooner or later.
We met an old friend in New York ________our expectation. She waved at us _______ the street when she saw us.
The factory was built in a secret place, around ________ high mountains.
Whenif he had any idea what the novel was about, Jack kept silent. Hehave read it very carefully.