—Where did you find the group of children?
—It was in the woods ________they played hide-and–seek.

–Did you remember to give Mary the money you owed to her?
–Yes, I gave it to her _____ I saw her.

You have to wear special clothing, a helmet and a life jacket ____ your raft gets turned upside down or sinks.

As I looked at the memorial, I thought about ____ terrible disaster it was for the people in Nanjing then and ____ they were to fight the Japanese invaders.

The islands developed on their own for 80 million years and _______ have many rare
animals found nowhere else.

No sooner had he finished his talk       he was surrounded by the workers.

   I like Emy, ________ she can be annoying（烦人的）at times.

It took several hundred years ______ paper-making spread to western countries.

It doesn’t matter what you wear—just ________ you come.

I was watching the news on TV _______ the power went off.