—Was it in 1969the American astronaut succeededlanding on the moon ? —Yes that’s right .

问题补充：

—Was it in 1969the American astronaut succeededlanding on the moon ?

—Yes , that’s right .

A. when ; on

B. that ; on

C. which ; in

D. that; in

答案：

A. when ; on

B. that ; on

C. which ; in

(答案→)D. that; in

解析：可联系答.案.网客服索取。