Interchange the negative sentence into affirmative sentence. There is no smoke without a fire .
AFire not causes smoke.
BSmoke is always there .
CFire is not there.
DNone of these .
AFire not causes smoke.
BSmoke is always there .
CFire is not there.
DNone of these .
Related Questions:
Convert the simple sentence into complex sentence by using adjective clause. How can you believe a dishonest person ?