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—Must I turn off the gas after cooking ? 

--Of course . You can never be ___ careful with that.

    A．enough          B．too            C．so             D．very

—Must I turn off the gas after cooking ? 

—Of course . You can never be _______ careful with

that.

A．enough          B．too            C．so             D．very

.—Must I turn off the gas after cooking ?  --Of course . You can never be ___ careful with that.

   A．enough          B．too            C．so             D．very

—Must I turn off the gas after cooking?

—Of course. You can never be ____ careful with that.

A. enough                B. too                     C. so                      D. very

—Must I turn off the gas after cooking ?  --Of course . You can never be ___ careful with that.

    A．enough          B．too            C．so             D．very

―Must I turn off the gas after cooking ?

  ―Of course. You can never be          careful with that.

      A．enough                B．too                     C．so                      D．very

----- Must I turn off the gas after cooking?

   ----- Of course. You can never be ______ careful with that.

   A.enough         B.too          C.so              D.very

— Must I turn off the gas after cooking ?

— Of course . You can never be____careful with that .

---Must I turn off the gas after cooking ?

---Of course . You can never be ___ careful with that.

A．enough　　　　 B．too　　　　　 C．so　　　　　　 D．very

 —Must I turn off the gas after cooking?

—Of course. You can never be             careful with that.

A. enough                B. too                     C. so                      D. very