My sister and Susan…. friends since they met together at the party.
A.have become
B.has become
C.is becoming
D.comes

My friends and my mother…. each other.
A.not likes
B.does not like
C.is not liking
D.do not like

Your pair of trousers…. in the closet.
A.is
B.are
C.were
D.have be

The weather reports all (A) showed (B) that there were (C) a tremendous storm front moving in (D).
A.reports all
B.showed
C.were
D.moving

An understanding of engineering theories (A) and problems are (B) impossible until basic arithmetic is (C) fully mastered (D).
A.engineering theories
B.are
C.is
D.mastered

There is (A) twenty-six bones in the human foot (B), fourteen of them (C) in the toes (D).
A.is
B.the human foot
C.them
D.in the toes

The most common (A) time for tornados (B) to occur are (C) in the afternoon or evening on a hot and humid (D) spring day.
A.most common
B.tornados
C.are
D.hot, humid

Some of the eye movements used (A) in reading (B) is (C) actually unnecessary (D).
A.used
B.reading
C.is
D.actually

Four years .... a required time for a student to complete his university education.
A.is
B.are
C.has been
D.were

One thousand dollars.... really a large sum of money for me.
A.is
B.are
C.were
D.have been