The teacher is happy today. He came into the classroom ______a smile ______his face.

The World of Dinosaurs is an amazing film which brings dinosaurs ______on screen.

It is strongly suggested that measures _____students to cheat in the exams.

middle school students, raising pet______ all day long is a sheer waste of time

It shames to me to say it, but I told a lie when _______ at the meeting by my boss[ ]