______ is the second day of the week.A. Tuesday B. Sunday C. Monday
LastmonthItraveledacrosstheSaharaDesertby______camelwithsomelocals. What________amazingexperience!
The light bulb ______ by Edison in the middle of the 1780s.
The old scientist has made a great contribution the moon.
—What is the table made _______? —Wood.
Many countries have a lot of rockets into space.