These plastic flowers look so _____ that many people think they are real,____they sell badly for the finanical crisis.

He went to bed ____, and when he woke up he found he still had his shoes on.

You should take ____________ measures to improve your working conditions．

It is        to read the books our teacher recommended , for they are well _____ reading.

. ---Have you paid your phone bill? --- No, the bill is _____ at the end of the month.