It won’t be too long before we _______a  way  smooth away these difficulties. 

A.  work out       B. will work out    C. had  worked  out    D.are  working  out 

It won’t be too long before we_____a way to smooth away these difficulties.

It won’t be too long before we_____a way to smooth away these difficulties.

A．work out                              B．willworkout

C．had worked out                         D．are working out

It won’t be too long before we_____a way to smooth away these difficulties.

1. A.
   work out
2. B.
   willworkout
3. C.
   had worked out
4. D.
   are working out

It won’t be too long before we ________ a way to smooth away these difficulties.

　　A．work out

　　B．will work out

　　C．had worked out

　　D．are working out