问题

In 1969 took his biggest step away fromthe earth Americans first walked on the moonThis is certainly just athought

A:how
B:when
C:where
D:what

正确答案是：

同类题型

Of all the students in his class, Xiao Ming writes_______________.

Tim doesn’t study ____as his sister does .

We were _____ at the_______ news that he died yesterday.

When I _______ the museum, I found that it _______.

We may meet all kinds of difficulties in the future, but we should be confident enough to any challenge.