-----When did the Party ___________?-----In 1921.

—Excuse me, will the plane for Beijing __________within an hour?—I’m not sure. You can go to the Information Desk for help.

In North America, most students go to school _____ the school bus.

—How helpful Susan is! —Yes.  She  never          to help others.

Bob,_______ your coat. It’s cold and windy outside.