Many people believe that hunger is only a problem in the developing countries________，it is a problem all over the world

I think the song in the film Titanic is one of _______ movie songs of all.

I don’t doubt _____ for the journey by doing jobs on the ship

If my father ______ here yesterday, he would have stopped me from going surfing.

Was it near the white building, if I may ask, ____ Martin Luther King gave a speech “I have a dream”?[ ]