He knows little of mathematics，______ of chemistry.

—Are you going to Dalian by air?—No, the tickets are ____expensive for me. 

At first the institute refused to purchase(购买)  the  experiment  instrument,  but  this decision was ______ changed.

 Help has already come from them, but the aid is ____ near what we expected.

There was such a long queue for coffee at the intervals that we __________ have to give up.