When your parents haven’t your letter for a long time they will worry about you.A. heardB.

问题补充：

When your parents haven’t your letter for a long time,they will worry about you.

A. heard

B. heard from

C. received

D. accepted

答案：

A. heard

B. heard from

(答案→)C. received

D. accepted

解析：可联系答.案.网客服索取。