I think it will be long ______ the influence of Sanlu Milk Powder incident dies down.
He asked us ________ we saw the lost cat or not.
After the exam, my teacher told me that failure ____ the mother of success.
The shop assistant finds it hard to satisfy the girl, for she is too ________ about clothes.
After the long journey, the three of them went back home,_________.
Australia is a(n) ________ country.