Daniel’s father left home in 2001 andever sinceA. has not heard ofB. had not heard ofC. h

问题补充：

Daniel’s father left home in 2001，andever since．

A. has not heard of

B. had not heard of

C. has not been heard of

D. had not been heard of

答案：

A. has not heard of

B. had not heard of

(答案→)C. has not been heard of

D. had not been heard of

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