If you want to study in foreign countries, ____ good knowledge of the culture is regarded as ____ must for you to live happily.
We discussed the high rate of single parent family, and wondered how to explain this ______.
____excited us greatly was that the Chinese team defeated their Egyptian team on Friday evening with 3-0.
I still remember how many years _____ was that I quarrelled with her for the first time.
In face of difficulties the climbers______in the hope of reaching the top before dark.
---Where did you fall in love with her at first sight? ---____was in a small villiage where my father worked.