It is well-known that ____ year 2006 saw many developments in ____ science and technology, with those in the field of space science being particularly notable.
That was the first time __________ I __________ face to face with the president.
I walked up to the top of the hill with my friend, __________ we enjoyed a splendid view of the lake.
The dam was not strong enough to __________ thefloods.
—Have you seen the film Under the Hawthorn Tree!—Of course, I have. It was in our village __________ it was made.
We feel __________ our duty to make our country a better place.