用括号内所给动词的正确形式填空(共5小题；每小题1分。满分5分)
一I phoned you yesterday morning, but you were not in.
一We __________ (fish)by the river.
___________ (make)sure that there are no mistakes，he will check the paper carefully.
Is the washing machine I have used for a long time worth __________(fix)?
There ___________(not be) much snow here in the past three years.
I don’t know if we ___________(sbow) around the History Museum tomorrow afternoon.