Question

1.It was in 1969 _______ the American astronaut succeeded in landing on the moon. A. that B. which

1.It was in 1969 _______ the American astronaut succeeded in landing on the moon.
A. that B. which C. when D. in which

2It was 1969 _______ the American astronaut succeeded in landing on the moon.
A. that B. which C. when D. in which 多选
解释一下好不谢谢

Answer 1

1.A（强调句~）

It was in 1969 that the American astronaut succeeded in landing on the moon
原句是 The American astronaut succeeded in landing on the moon in 1969.（强调时间~）

强调句的一般句式就是 it is/was ……that……

2.CD
It was 1969 when/in which the American astronaut succeeded in landing on the moon

如果把1969放回末尾~会发现少了介词 in~这时候就要用 when（此时when=in which）
以此类推~（where=in which 有时候会相等~~）

希望帮到楼主~

Answer 2

1，C
2，A
（我猜的 ）

Answer 3

CD

Answer 4

A, CD