It is reported that between the year 1550 and 1950 about one kind of living things___each year .
He will _____ our class to sing at the school singing contest.
They told us that these small apples are often sweeter than big ____.
The girl ____ a beautiful skirt has told me the news. Which is not right?
“Is there anyone in your class ____ the name of Mary? ”____.
----Have a nice holiday! ---- ____.