The schoolboy _________to the blind man on his Way home yesterday afternoon．

So far, the moon ________ by man already.  

---Let’s go fishing if it ______ this weekend.---But nobody knows if it _______.

—Have you mended your shoes, Bob？—Yes, I ____ them twenty minutes ago ．

In the last few years, great changes _________to her, she is not the one that used to be.