How long does it take you __________ your homework in the evening

ter when ther your job isimportant,you can contribute to social harmony that will, ______ ,benefit thereconstructioon effort in the quake – hit region

27．Today Chinese____by more and more people around the world

There are lots of places of interest _____ in our city.

Special attention should be _____ to air pollution wherever the factory will be built.