—How often do you eat out ?—____________, but usually once a week.
28.The government had hoped to draw as much attention as possible to this problem but it didn't ______ that way.
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.