(1) The curtains were flapping at the open window.

(2) The flag was flapping about in the light wind.

(3) The flag was flapping around in the light wind.

(4) The flag was flapping about in the wind.

(5) The sails were flapping gently in the wind.

(6) He made little flapping motions with his arms.

(7) A pigeon emerges, wings flapping noisily(Sentencedict.com), from the tower.

(8) There's no use flapping about it now.

(9) The sails were flapping against the mast.

(10) The gulls flew off, wings flapping.

(11) Flags were flapping/fluttering in the breeze.

(12) The flags were flapping in the breeze.

(13) There's no use flapping about it now. What is needed is your solid action.

(14) He tried to tuck his flapping shirt inside his trousers.

(15) Do stop flapping about, we'll get the job done in time.

(16) Do stop flapping around, we'll get the job done in time.

(17) She walked up and down, flapping her arms to keep warm.

(18) The car drove off with its rear door flapping open.

(19) Stop flapping about/around!

(20) Another large fish came flapping across the gap.

(21) Death raced from room to room[sentencedict.com], his robe flapping.

(22) A sailing ship was passing, its mylar sails flapping in the gusty wind.

(23) He thought of Byrne, like a flapping crow on the wire.

(24) However, the equation assumes stationary rather than flapping wings, making its use in this case misleading.

(25) The old man stumbled in, flapping his stump toward the outside.

(26) But the indefatigable Swans, yellow labels flapping from their shoulder bags, would never dream of sitting anything out.

(27) A frequent metaphor for one aspect of chaos theory is called the Butterfly Effect - butterflies flapping their wings in the Amazon affect the weather in Chicago.

(28) And the Linwood plant a graveyard, grass growing between the assembly lines, corrugated-iron roofs flapping in the wind.

(29) From political correctness to the flagging tenure system, the right of unadulterated academic lip flapping seems increasingly embattled.

(30) His present place was shaky - a violent gale had just blown in the window panes and the frame was flapping loose.