Polly’s mother was anxious about ______ she could get home safely in ______ foggy a day.
---- What’s your opinion about it? ----You can _____at a glance that the building was poorly built.
____ it happens, her birthday is after mine.
It is such a modern machine ______ few of the workers know how to operate.
_____ and I will hit you.
China is larger than _____ in Africa.