I have worked with him for some time and have found that he is ________ than John.

A．more efficiently a worker  　B．a more efficient worker

C．more an efficient worker  　D．a worker more efficiently

He never wrote ________ his first one again.

A．as good book as  B．such good a book as

C．so good a book as  D．such good book as

You're driving too fast.Can you drive ________？

A．more slowly a bit  B．slowly a bit more

C．a bit more slowly  D．slowly more bit

—The film is, I have to say, not a bit interesting.

—Why？It's ________ than the films I have ever seen.

A．far more interesting  B．much less interesting

C．no more interesting  D．any less interesting

—Are you feeling ________？

—Yes.I'm fine now.

A．any well  B．any better  C．quite good  D．quite better

After two years' research，we now have a ________ better understanding of the disease.(2013·全国Ⅱ)

A．very  B．far  C．fairly  D．quite

It is generally believed that teaching is ________ it is a science.

A．an art much as  B．much an art as

C．as an art much as  D．as much an art as

The businessman boasts to me that I can't find a ________ gold necklace，because his shop deals in the best.

A．good  B．better

C．best  D．worse

Speaking of all the songs he has written，I think this is probably his ________ one.(2013·全国Ⅱ)

A．better－known  B．well－known

C．best－known  D．most－known

Of the two coats，I'd choose the ________ one to spare some money for a book.(2010·四川)

A．cheapest  B．cheaper

C．more expensive  D．most expensive