Would you please drive _________________ My train is leaving.—I’d like to, but safety comes first.

It is often _____ that an American starts a speech with a joke,while a Japanese has an apology to make[ ]

I did well in the English exam last week.—- I did _____ . I got a full mark.

After months of voyage, Columbus arrived in ________ later proved a new continent.

living in ______ world of developing,______ world where any problemcan be solved in a peaceful way.