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Do tell me the ways you think of_______the problem as soon as possible.

   A.to solve          B.solving          C.solve           D.being solved

Do tell me the ways you think of __________ the problem as soon as possible.

A. to solve　　　　　　　　　　　　　　　　　　　　　　　　　　   B. solving

C. solve　　　　　　　　　　　　　　　　　　　　　　　　　　　　   D. being solved

A. to solve　　　　　　　　　　　　　　　　　　　　　　　　　　   B. solving

C. solve　　　　　　　　　　　　　　　　　　　　　　　　　　　　   D. being solved

Do tell me the ways you think of ________ the problem as soon as possible.

[　　]

Do tell me the ways you think of ________ the problem as soon as possible.

[　　]