Was it in 1969 ________ the American astronaut succeeded ________ landing on the moon?
A. when, on B. that, on
C. when, in D. that, in
Was it in 1969 ________ the American astronaut succeeded ________ landing on the moon?
A. when, on B. that, on
C. when, in D. that, in
D
it用于强调句型中,后半部分为succeed in doing 结构。