Was it in 1969 _____ the American astronaut succeeded ____ landing on the moon?

– Who are playing football in the gym now?
– ________ the students from No. 1 Middle School.

It was in the factory _____ I worked _____ I got to know her.

—Have you seen the film The War Horsey
—Of course, I have．It was in my hometown ______ it was made．

People have come to understand _____ prevents so many Americans from  being as happy as one might expect.

It was not until mid-night_______ they reached the camp site.

Could it be in the room        we had a talk last night        you left your keys ?

Mr. Green didn’t understand ________made his daughter so absent-minded.
A. how that was      B what was it        C. why it was that      D. what it was that

---We all wonder ____ the relationship between France and China is good again now?
---Because the two countries have common national benefits.

It was for this reason ________ her parents moved out of London and settled down in a mountain village.