Teaching is increasingly carried out through ' blended' learning, combining online and face-to-face teaching with small classes and extensive use of video conferencing.

They were very well dug in and had made extensive use of cellars to protect themselves.

The book would have been strengthened with a glossary or a more extensive use of explanatory footnotes, to overcome the inevitable distancing effect of the Arabic terms.

The widespread construction of factories and extensive use of machinery represented the mechanical basis of this increase.