On my_____________ birthday, my aunt gave me a nice dress as a present.
A.nine B.ninth C.the ninth
—Who is the_____________ runner, Mike or Sam?
—Mike is. He is good at running.
A.faster B.slower C.weaker
Work hard, _____________ you will get good grades.
A.or B.but C.and
Many more people have realized saving_____________ earth begins with small things.
A.a B.an C.the
Look! Miss Wang is carrying a heavy box. Let's go to help______.
My little brother likes to jump up and______ like a monkey.
