I don’t know ______ with this problem.It’s too hard. —Youcan ask Mr Wang for help.

The dictionary is ________ to my translation, but that one is ________.

Earth is believed______ by an object the size of Mars at some point in the distant past before its surfacecooled

(大连市高三双基测试卷) If it were not for literature, the well-known writer J.K. Rowling _______ nowhere in life.

I’m surprised to hear that Sue and Paul have______.— So am I. They seemed very happy together when I last saw them. [ ]