Only when       possible to settle the problem.

—Did Jack come back early last night?
—Yes. It was not yet eight o' clock          he arrived home

When you ______ at a restaurant, please order just enough food.

_______ she is, she has not much inside.

No matter ______ the CRH accident in Wenzhou, it had and will have much warning significance.

He was inspired to start again ________ he had failed.

_______ difficult and challenging the task may be, we must finish it on time, because there is a possibility _______our work will go down in history.

It was 5 o’clock __________ the visitors finally arrived at Pudong International Airport.

__________, they couldn’t make her change her mind.