Twenty dollars..................the price.
A.are
B.is
C.being
D.were

A number of graduates..................scholarsips from this department.
A.have received
B.has received
C.are received
D.receives

Most of the rooms in the hotel...........air conditioning.
A.has
B.having
C.have
D.are

His knowledge of languages and international relations..............him in his present work.
A.aids
B.aid
C.have aided
D.had aided

I'm happy that everything ...................in its place.
A.are
B.been
C.is
D.have

There....................never been an environment disaster of this magnitude.
A.has
B.have
C.are
D.is

The word “obsolete” in paragraph 2 mostly means ______.
A.out of date
B.out of hand
C.out of order
D.out of place

My new pair of pants.................at the cleaner's.
A.is
B.are
C.be
D.have been

Everyone who..............into the woods should recognize common poisonous plants such as poison ivy and poison oak.
A.gone
B.go
C.went
D.goes

The number of chromosomes in a cell..................from species to species.
A.varies
B.vary
C.varying
D.to vary