—Mom today I received a message telling me to send money to the account.—Delete it. It’s

问题补充：

—Mom, today I received a message telling me to send money to the account.

—Delete it. It’s a trick. Many a person by such tricks.

A. have been cheated

B. were cheated

C. has been cheated

D. was cheated

答案：

A. have been cheated

B. were cheated

(答案→)C. has been cheated

D. was cheated

解析：考查主谓一致和被动语态。Many a+单数名词虽然表达的是复数概念但是做主语时谓语动词用单数；句意：很多人被这样的诡计欺骗了。