【题目】After _______ had happened he could not continue to work there.

【题目】The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

【题目】So ______ that all the living things have died out gradually.

【题目】The number 9. 11 is a special number, ______, I think, that will be remembered by the Americans for ever.

【题目】An advertisement is useful in ______ it can persuade customers to buy the kinds of goods in the shop.

【题目】How can they learn so much ______ they spend such a lot of time hanging about?

【题目】A good friend of mine from I was born showed up at my home right before I left for Beijing．

【题目】— Do you know ______ Miss Green changed her mind to take part in the movement?

【题目】It ______ me that I should treat myself a dinner after such an exhausting examination.