He ________ his position because he had been offered abetter job.

Why couldn’t I get excellent grades in the exam though I prepared for it well, Paul—You needn’t think like that. ___________, you have made progress in it.

This company is going to ________some 160 employees because of the drop in sales.

The story shows that_______ knowledge of _______ first aid can make ______ real difference

79. Such a grammar mistake is ______ among the beginners of English study.