12.The price ________，but I doubt whether it will remain so.
A.went down
B.will go down
C.has gone down
D.was going down
13.—How long ________ each other before they ________ married?
—For about a year.
A.have they known; get
B.did they know; get
C.do they know; are going to get
D.had they known; got
14.You can’t move in right now.The house ________.
A.has painted
B.is painted
C.is being painted
D.is painting
15.—Hey，look where you are going!
—Oh，I’m terribly sorry.________.
A.I’m not noticing
B.I wasn’t noticing
C.I haven’t noticed
D.I don’t notice
16.The reporter said that the UFO ________ east to west when he saw it.
A.was traveling
B.traveled
C.had been traveling
D.was to travel
17.—Is this raincoat yours?
—No，mine ________ there behind the door.
A.is hanging
B.has hang C.hangs
D.hang
18.I turned around and saw everybody ________ at a man who ________ loudly in a foreign language.
A.was staring; was shouting
B.was staring; shouting
C.staring; shouting
D.stared; shouted
19.Henry remained silent for a moment.He ________.
A.thought
B.had thought
C.was thinking
D.was thought
20.We would like to go and thank him ourselves，but we ________ out his address yet,
A.haven’t found
B.hadn’t found
C.didn’t find
D.don’t find
12.The price ___C_____，but I doubt whether it will remain so.A.went down
B.will go downC.has gone down
D.was going down13.—How long _____A___ each other before they ________ married?—For about a year.A.have they known; get B.did they know; getC.do they know; are going to get D.had they known; got
