You can hardly imagine the difficulty the woman had________ her children

He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars

Pity you missed the lecture on nuclear pollution.— I _____it, but I was busy preparing for a job interview. [ ]

Iwonder why he has been acting so strange these days. —Recentpressure at work may ______ his behavior.

He looked quite healthy ____ he was ____ the age of seventy