It was on September 25th ______ China’s first aircraft carrier, named “Liaoning”, was handed over to PLA Navy.

— How long is it _____ you picked up your badminton training? — It was not until my finance became better in last December _____ I started the training.

It was the President himself______ opened the door．

It was at 10 o’clock last night ________ the visitors finally arrived at Zunyi Airport.

---Where was the film The Warring State made?--- It was in the very Movie& Television Base       I visited last week      the film was made.