Điền vào chỗ trống

O
1
A: When
was Star Wars made
B: There are six Star Wars films! Which one are you talking about?
A: What languages
B: French, German and Italian.
2 A: Who .......
B: No one knows. A dog found it.
3 A: How.....
B: By accident, I think.
4 A: When .......
B: In 1953.
5 A: In which city
B: In Oslo.
6 A: How......
passive.
B: A spacecraft took samples.
******
?
.?
for the first time?