The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they ________. 

When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.

Little Bob is often educated by his parents to be good and friendly to anybody even if ________.

 —Did Alan enjoy seeing his old friends yesterday?—Yes, he did. He __________ his old friends for a long time. 

 —Why didn’t you answer the phone when I called you last night?—Sorry, I __________ a bath upstairs.