Jane, I found _______ umbrella. Is it yours?
No. it's mike's. Mine is _________ third one on the shelf.( )
a; an
an; the
the; a
a; the
I don’t know if Mr. Smith ____. If he ___, I will tell you.
Doing exercise every day _____ me very healthy. A. makes B. make C. made
--Does Tom ______ a brother? --No, he ______.
He will call you when he in Beijing.
—What did our geography teacher say? —She told us that the earth _____ around the sun.