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.
Climbers is an exciting movie. I'm going to______ it.
July is the seventh______ of the year.
