To clear the flop FF#7, you have to make JK=XX and SR = Blank 1

In FF#7, the asynchronous inputs (SR) sets/clears the flip-flop when they are in Blank 2 state.

If J=0, K=1, S=0, R = 0, then FF#7 goes to Blank 3 state on the active edge of the clock pulse.

If S=1, R = 0, then FF#7 goes to Blank 4 state regardless of the clock pulse and the value of JK inputs.

The FF#7 flip-flop operates normally and changes its state on the Blank 5 of the clock pulse.

To inverse the state of the flip-flop FF#7, you have to make JK=Blank 6 and SR= 00.