根据首字提示完成句子。
1. When he can't eat the grapes, the fox thinks they must be s__________.
2. -Try the fish. How is it?
-Oh, I think it's a little s_________ .
3. He s___________ lots of sugar on the cake, so it was very sweet.
4. I took your umbrella by m __________.
5. Potato chips were invented by a ________ called George Crum.
