11.Not until quite recently __ he gave up his plan to go abroad.
A.I knew
B.I had known
C.did I know
D.I did know
参考答案:C
12.Let's have a __ discussion about this topic.
A.farther
B.further
C.father
D.far
参考答案:B
13.It's natural that she __ do so.
A.should
B.will
C.could
D.must
参考答案:A
14.You'd like to take a walk after supper,__ you?
A.hadn't
B.would
C.wouldn't
D.shouldn't
参考答案:C
15.Stop __,boys!It's time for class.
A.talking
B.to talk
C.talk
D.being talk
参考答案:A