With the loss of her husband in the earthquake, the two children mean ________ to the young mother.
No wonder you caught a cold. You________have gone out last night without a coat.
His advertisement income this year is about $36 million, over three times________of last year.
I suppose by the time I come back in ten years' time all these old houses_______down.
I'm afraid I've little time to spare these days. I've a pile of papers to_____before the meeting.
Play, often seen as________activity for kids, is still important in______development of teenagers.