The iron and steel industry ........... the key link in production.
A.is
B.are
C.do
D.does

A cart and horse ......... in the distance.
A.saw
B.see
C.were seen
D.was seen

Those who ....... to go with me, please raise your hands.
A.wants
B.want
C.wanting
D.are wanting

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A.out of date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