At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example.

The child came back _______ from a dangerous situation.

My grandfather is always thinking for others. In other words, he is always ____.

(2014·辽宁大连高三双基测试)My________subject is Business Administration and my minor subject is English.

In the old days, some wealthy people killed animals just for the ______ of it.