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1 People ___ get fat as they grow older.

A.have a tendency to     B. are easy to

（答案為A, 請問B如何排除）

2 I realized that my parents' money was not ___, so I decided to deposit all my fift money in a bank.

A. easily earned    B. easy to be earned   

C. to earn easily     D. easy to have been earned

（答案為A, 請問BCD如何排除）