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He ran ________ fast that I couldn’t catch up with him.

My mother has not yet recovered from the illness, but she is __________ getting better.

Everything seems to be going______for the first two weeks after I moved to London.

In recent years, the ______ dry heat had led to a series of natural disasters.

He was known to have been hanging about and was not expected to pass the test. ______, his failure came as no wonder to his parents.

Failure hurts adults and children ______ , but it can make a positive contribution to your life once you learn to use it.

Chemical pollution will bring about a threat to agriculture and food chain, and ________ to human health.

As is known to all language learners, newly learnt words will soon be forgotten unless ______       used in everyday communication.

History is the best teacher. It ______records the development path of each country and foretells the future to us.

His health is ______improving. I'm sure he will come back to work soon.