After Mandela was free (自由的) in 1990, he chose to shake hands with the people ________ wanted to kill him.
—There are so many problems.I’m so afraid. —You should try to________your shyness first.You’re not a child any more.
—What are they doing at the bus stop? —They are waiting for a bus________.
—What happened________him? —He hurt himself.
We were surprised________that news.
When I got home,it was raining________.