Do you learn maths ______ asking the teacher ______ help–Oh, yes. It helps a lot.

Mr. Green drove slowly on the way home until he reached the high way, ______ the speed limit was 60 miles per hour.

Oh dear! How can you ________ such important information?—Forgive me.[ ]

Children are often warned ______ with fire.

The door burst open and________, shouting with anger.