When the bell sounded, the boys rushed out of the classroom, each______ a number of new bo

The pub owner would sound a bell indicating last orders at around 10:00.（)

Maggie ____the floor when she _____the door bell ring. A：was sweeping … heard B：swept …

The hero boy grows up to a man and he can not hear the sound of the bell any more.（)

Voicing is the vibrating of the vocal cords when sounds are produced.（)

When the vocal folds are apart, the air can pass through easily and the sound produced is

In our class, when the bell rang and the teacher closed his book, it was a___________