8.If negotiations for the new trade agreements take __, critical food shortages will develop in several countries.
A.too much longer
B.much long too
C.too many longer
D.much too long
9.Doing your homework is a sure way to improve your test scores, and this is especially true__ comes to classroom tests.
A.when
B.since
C.before
D.after
10.I recommend that the planning __ until all the materials have been supplied.
A.is not started
B.will not be started
C.not be started
D.is not to be started
11.Greatly agitated, I rushed to the apartment and tried the door, __ to find it locked.
A.just
B.only
C.hence
D.thus
12.When he arrived, he found ___ the aged and the sick at home.
A.none but
B.none other than
C.nothing but
D.no other than
13.As 4 to 8, ____ 8 is to 11.
A.as
B.so
C.that
D.which
14.According to some educators, the goal of teaching is to help students learn what __ to know to live a well-adjusted and successful life.
A.do they need
B.they need
C.they are needed
D.as they may need