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【单选题】
Oldfashioned phones matter when wireless networks ________ in disasters.(2013·福建，28)A.
turn down
B.
turn out
C.
break down
D.
break out
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【单选题】I don’t smoke now, but I ____for almost ten years.
A.
ever smoked
B.
have ever smoked
C.
had ever smoked
D.
was ever smoking
【单选题】I don’t drink now, but I ________ for almost ten years.
A.
ever drank
B.
was ever drinking
C.
have ever drunk
D.
had ever drunk