The war was over about three months ago, ______ the American soldiers in Iraq are still having a lot of trouble to deal with. 

 --- Look, what a heavy rain! What shall we do now? --- ____________ it’s raining hard, let’s stay at home to surf on the Internet.

3D printers are still _____ expensive for most of us ______ afford. 

Don’t forget to wash your hands _________ you have meals. 

Sometimes I feel bored and don’t  know ______ to do.