The painting is .so valuable that it is difficult to calculate____ its price would be.A that B. which C.what D.\
Jim was born on a farm, _____, he knows little about farming.
______ is surprising to us is that Tom, for ______ English was once boring, can speak English fluently as though he were a native speaker.
In our work quality counts for ______ quantity.
— What are you doing outside the class? Didn’t you hear the clock ______? —Sorry, sir. I ______.
What a pity! Considering his ability and experience, he ______ better.