The supermarket rules state that no goods ________ be taken out of the supermarket, ________ paid for by the shopper.
---Shall we go to the art exhibition right now?--- ____________.
—He failed in the exam again. —He __________his teacher’s advice.
When first to the market, these products enjoy great success.
It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it.
The English in the future will be quite different from the English of today. It is possible that some English words may even ________ completely.