______children whose parents had died in Wenchuan earthquake _____sent to live with families in other cities.

Chinese government should ______ taking action at once to defend the Diaoyu Islands.

The middle-aged man said he would accept the job, so we have asked him to ________ his acceptance in writing．

physics

Drinking water, having a healthy diet and taking exercise are all positive ways to ________ you when you are working on a tight schedule.