A / an _______ species is a population of an organism which is at risk of becoming extinct.
A.endangered
B.dangerous
C.endangerment
D.endanger

A book may be evaluated by a reader or professional writer to create a book ________.
A.reviewer
B.reviewed
C.review
D.reviewing

Boy, stop reading. ________ the book down and go to bed.
A.Put
B.Pick
C.Take
D.Set

Which subject is this book ________?
A.up
B.of
C.on
D.for

We have to apply effective measures to save many plant and animal species _______ extinction.
A.on
B.from
C.in
D.for

Almost half of turtles and tortoises are known to be threatened with ____.
A.extinct
B.extinctive
C.extinction
D.extinctly

They are going to _______ the pool to 1.8 meter.
A.deeply
B.deep
C.depth
D.deepen

He picked ________ the book and turned page after page.
A.away
B.in
C.up
D.on

Who does the book belong ________?
A.to
B.on
C.through
D.for

Not many people find reading more ________ than watching TV.
A.interest
B.interesting
C.interested
D.interestingly