Many teens don't get enough sleep because they have too much homework to do, which ________ them up at night.

With everything needed________，the host declared the start of their wedding.

A man is being questioned in relation to the _____murder last night.

The little boy was the only one who ________ the earthquake in this village, and the government sent him to a city school after that.

Walking alone in the dark，the boy whistled to ________ his courage.