---There is some doubt _____ the concert will be held as the company intends to redecorate the stadium next week.
---What a pity!

The American economy is still in trouble，________ the Chinese economy is beginning to pick up.

Someone called me up in the middle of the night, but they hung up ____I could answer the phone.

Try ___ she might, Sue couldn’t get the door open.

______ there was no conclusive evidence, most people thought he was guilty.

Most animals have little connection with animals of a different kind, _______ they hunt them for food.

It was not long _____ he was born that his mother died of illness.

It is ten years _____ I lived in Nanjing, so I know ____ about what it is like today.

—The product carries one year’s guarantee. ________ I am covered if it doesn’t work?
—That’s right, _______ it’s damaged.

After the war, a new school building was put up ________ there had once been a theatre.