The poor boy is in danger We should do all we _____ help him out

ou’re learning to drive, _______ agood teacher makes a big difference

_____ I always felt I would pass this monthly exam, I never thought I would get an A.

下列各句中，“而”的意义和用法与其他三项不同的一项是（ ）

He was told that it would be at least three more monthshe could recover and return to work.