What’s the matter with John He has been sittingthere for hours.—A postcard from his father _____ an attack ofhome-sickness in him.

should be responsiblefor the accident — The boss, not theworkers They just carry out the order ________

Miss Li teaches ______ English five times a week.

I once heard him ____ that a rainbow was a bridge from earth to heaven

House prices vary from place to place and are usually high _____ there are famous schools.