It was in New Zealand ______ Elizabeth first met Mr.Smith.

 ______ you make a promise, you should keep it. 

---It’s a long time ______ I last saw you.---Yes, and it will be another month ______ we can meet again.

    the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．

It ____in this new hall ____ was just set up last month ________ we held an important meeting yesterday.