We were on the point of discussing financial investment_____ the telephone rang unexpectedly

Studies show that people are more_________to suffer from back problems if they always sit before computer screens for long hours.

I can’t go for a picnic with you becausesomething urgent has _____ —What a shame!

Jane has been so ________ in getting used to everything that she hasn’t had time for social activities.

He asked them to come to his office one _____.