1．The________ (数量) of potatoes and bread people buy has dropped.
答案：amount
2．I'll have to change the ________ (插头) on my hairdryer.
答案：plug
3．Batteries should be kept in a dry place for fear that electricity should ________ (渗漏) away.
答案：leak
4．A whale is a fish. True or ________ (错)?
答案：false
