Whether by accident or ___________, he arrived too late to help us.

The questionnaire takes________ten to fifteen minutes to complete and can be used along with the assessment interview.

To our relief, clothes and blankets have been _______among the people in that earthquake stricken area.

All of us are busy going over our lessons, as the Mid-term exam is _________.

Though the “No smoking” signs have existed for long in public places, heavy smokers often ________ them and light up cigarettes.