.. _________advertisements are of great help, I don’t think we should entirely rely on them.
27.The students wonder______ good the course will do to their future jobs.
26.He never regretted the anxious hours he had had ______ for the missing papers.
25.At present, the butter factory is still polluting the river though it ______ to stop.
24.____, the disaster in Haiti shows once again that even among the worst, there is always hope.
23.Looks are not________. It's what's inside you that really matters.