26.It was in 1969 __________ the American astronaut succeeded in landing on the moon.

问题描述:

26.It was in 1969 __________ the American astronaut succeeded in landing on the moon.
A.that
B.which
C.when
D.in which
why?

A
强调句,不用when
It is ...that
强调人用who
It is he who...
原句The American astronaut succeeded in landing on the moon in 1969.